Sumring

A 433MHz Wireless Smoke & Heat Detector is a battery-operated fire alarm device that combines photoelectric smoke sensing, fixed-temperature heat detection, local audible and visual warnings, and a radio-frequency alarm output in a 433MHz configuration. For distributors, installers, contractors, and private-label brands, choosing one requires more than comparing appearance and unit price. Purchase decisions require documented specifications, RF compatibility, compliance evidence, and a production plan—especially when replacing an older model. Which Technical Details Should Buyers Confirm First? The supplied combination photoelectric smoke and heat alarm manual provides a useful starting point. Its specifications describe an optical sensing chamber that detects smoke-related infrared light scattering and a heat sensing element with an alarm temperature of 57°C ± 2.7°C. Specification Manual reference Smoke detection Infrared photoelectric sensing Heat alarm point 57°C ± 2.7°C Wireless output 315MHz or 433MHz variant Power Two 1.5V batteries Sound warning 85dB stated; verify measurement distance Alarm indications Sound and flashing red LED Working temperature -10°C to +55°C Relative humidity Below 95% RH Dimensions Diameter 105 × 43mm Reference detecting area 20m² stated in manual These are manual-reported values, not independent test evidence. Verify the production revision; follow local rules for coverage and mounting. For a 433MHz Wireless......

The 140th Canton Fair 2026 will open on October 15 and conclude on November 4 at the China Import and Export Fair Complex in Pazhou, Guangzhou, China. SUMRING warmly welcomes global customers, including wholesalers, distributors, installers, contractors, and trading companies, to visit our company in Shenzhen, China. We are currently focusing on two key product categories: emergency stop button protective covers and gas leak detector alarms. Visitors are welcome to explore our manufacturing capabilities and discuss product selection, bulk purchasing, and customized ODM/OEM solutions. For wholesalers, safety equipment distributors, installation contractors, and engineering companies, this international trade event provides an opportunity to evaluate Chinese manufacturers and plan future procurement. When Will the 140th Canton Fair Take Place? The exhibition will be organized into three phases: Phase 1: October 15–19, Advanced Manufacturing Phase 2: October 23–27, Quality Home Life Phase 3: October 31–November 4, Better Life Throughout the 140th Canton Fair 2026, international buyers can explore opportunities for equipment sourcing, private-label manufacturing, and long-term supply partnerships. Emergency Stop Button Protective Covers for Project Applications Protective covers help shield emergency control devices and manual call points from accidental contact, dust, moisture, and everyday impact. SUMRING’s SR-A08 protective cover series features transparent polycarbonate......

A smoke detector removal tool kit is a maintenance accessory set used to grip, rotate, remove, and reinstall compatible ceiling-mounted smoke detectors with an access pole. It supports planned inspection, cleaning, replacement, and commissioning when detectors use a compatible mounting structure and can be safely reached from floor level. For fire alarm contractors, facility maintenance companies, distributors, and OEM buyers, reach is only one consideration. Detector compatibility, grip stability, pole structure, working height, replacement parts, packaging, and sample verification all affect whether the tool can perform reliably in a real project. Why Do Commercial Projects Need a Detector Removal Tool? Smoke detectors are commonly installed on ceilings in offices, hotels, warehouses, schools, hospitals, shopping centers, and industrial facilities. Routine servicing may require technicians to remove multiple detectors across a large building. In suitable locations, a smoke detector removal tool kit can reduce repeated ladder or scaffold setup, shorten routine service time, and reduce disruption to building occupants. It may also help technicians control the detector more steadily when removing it from its base. However, an access-pole tool does not eliminate every working-at-height risk. Stairwells, atriums, obstructed ceilings, unusually high areas, and damaged detectors may still require an approved ladder, platform,......

A Solar sensor light with alarm is an outdoor security device that combines solar charging, passive infrared motion detection, a flashing warning light and an audible siren. When the PIR sensor detects movement within its coverage area, the device activates the selected warning mode without requiring permanent mains wiring. For distributors, security installers, agricultural suppliers and private-label buyers, the purchasing decision should not depend only on alarm volume or housing appearance. PIR coverage, charging performance, battery capacity, working modes, mounting position, weather resistance and OEM documentation all affect the product’s performance in a real project. How Does the Solar-Powered Alarm Work? The operating process follows a simple signal path: Sunlight → Solar panel → Rechargeable battery → PIR sensor → Controller → Siren and warning light The 5V, 60mA polycrystalline solar panel charges the internal 3.7V, 1200mAh 18650 lithium battery during daylight. When the product enters its active state, the PIR module monitors the selected area for human movement. Once movement is detected, the Solar sensor light with alarm activates sound, light or both according to the selected operating mode. The supplied information states that the alarm can continue while movement remains within the sensing area and stop approximately 30......

Fire alarm cable is an insulated conductor assembly used to carry power, alarm signals, control signals, or notification outputs between compatible fire-system components. For B2B buyers, selection requires more than comparing conductor size and price. Voltage drop, insulation, flame performance, installation route, local code, and system approval must be evaluated together. The supplied approval sheet identifies this product as 60227 IEC 53 (RVV) 2×0.75 mm², with two stranded bare-copper conductors, PVC insulation, and a black PVC VW-1 jacket. It references GB/T 5023.5-2008 / IEC 60227-5:2003. This guide explains what B2B buyers should verify before procurement. What Does the 2×0.75 mm² Specification Mean? “2×0.75 mm²” means that the product contains two insulated conductors, each with a nominal cross-sectional area of 0.75 mm². The approval sheet specifies blue and brown cores. Each conductor consists of 24 strands of 0.20 mm bare copper, with a stated bundle diameter of 1.13 mm. Stranded construction can simplify routing and termination in suitable indoor installations. A fire alarm cable intended for continuous movement, outdoor exposure, direct burial, wet locations, plenums, or circuit-survival applications may require a different construction and separate approvals. Key Technical Parameters for B2B Procurement Item Supplied specification Construction 60227 IEC 53 (RVV), 2×0.75......

SUMRING is issuing a product lifecycle update for B2B distributors, wholesalers, installers, contractors, and trading partners. The SR-820DHR Wireless 433 Smoke & Heat Detector has been discontinued. At present, approximately 400 units remain in stock, and availability may change quickly as existing inventory is allocated. For customers who still require the SR-820DHR for existing orders, replacement projects, or channel inventory, we recommend confirming stock before placing a purchase order. Once the remaining inventory is sold, this model will no longer be available for regular supply. A Replacement Is Available for New Inquiries To support continuity for ongoing customer inquiries, Sumring can now recommend a current wireless 433 smoke & heat detector with the same core application: combined smoke and heat detection with 433 MHz wireless communication. For existing installations, follow our 433MHz smoke and heat detector replacement guide to check the installed host, run a sample pilot, and plan a phased rollout before approving the new model. This replacement provides distributors, installers, project contractors, and trading companies with a practical alternative when the original SR-820DHR is no longer available. For distributors and contractors evaluating replacement options, choosing a new wireless detector requires more than matching the 433MHz frequency. RF protocol......

As China’s National Day approaches, SUMRING would like to thank our global distributors, wholesalers, fire alarm contractors, installers, project buyers, and trading partners for their continued trust and cooperation. Our China National Day holiday will run from October 1 to October 7, 2026. During this seven-day holiday period, production and shipment schedules may be temporarily adjusted. Customers with upcoming fire alarm projects, replenishment requirements, customized products, or scheduled deliveries are therefore encouraged to plan orders in advance. 7-Day National Day Holiday — We Remain at Your Service Although our regular factory schedule will be affected during the holiday, our team will continue to provide online communication and customer support for project inquiries, quotation requests, product selection, and future order planning. From October 1 to October 7, we will remain dedicated to serving you. For time-sensitive requirements, please contact our team before the holiday so that production capacity, customization details, packaging, and shipping schedules can be coordinated earlier. Fire Alarm Products Available for B2B Projects SUMRING supplies a broad portfolio for distributors, contractors, installers, system integrators, and private-label buyers, including: IP67 waterproof manual call point covers, gas detectors, heat detectors, smoke detectors, fire alarm control panels, manual call points, beam detectors,......

Sumring will observe the 2026 Mid-Autumn Festival holiday from September 25 to September 27, 2026. During this period, our production and office schedule will be adjusted, while our sales team will remain available online to support overseas B2B customers with project inquiries, quotations, product selection, and customization discussions. For distributors, wholesalers, system integrators, contractors, and private-label brands, holiday timing can affect purchasing plans and project schedules. To help customers prepare in advance, we recommend confirming samples, specifications, packaging requirements, and production arrangements before the holiday whenever possible. Fire Alarm Products for Global B2B Markets Sumring continues to supply a broad range of fire alarm and safety products for export markets. Key product lines include IP67 manual call point covers, gas detectors, smoke detectors, fire alarm control panels, sounders, strobes, and related fire safety accessories. Sumring’s current product portfolio and manufacturer information also emphasize OEM/ODM support for international customers. Our IP67 manual call point cover range includes private-mold designs developed for outdoor and demanding installation environments. Selected products support branding, customized installation sizes, customized packaging, and ODM cooperation, helping distributors and project contractors build differentiated product lines. Internal link: IP67 Manual Call Point Cover for Outdoor Fire Alarm Protection Gas and......

A Beam Smoke Detector is a line-type fire detection device that sends an optical or infrared beam across a large open space and monitors how smoke reduces or changes the received light signal. Instead of sampling smoke at only one ceiling point, it supervises a long optical path, making it suitable for warehouses, factories, shopping malls, exhibition halls, hotel atriums, museums, and other high-ceiling buildings. For B2B buyers, the correct detector is not simply the model with the longest range. Selection should match the ceiling geometry, optical path, fire alarm control panel, mounting conditions, certification requirements, commissioning method, and maintenance plan. The SR-BS10 conventional reflective beam detector in the supplied material is a useful example of the points buyers should verify before project approval. Beam detection is only one part of a complete fire protection architecture. B2B buyers planning an integrated project can first review the main components of a building fire alarm system to understand how detection devices, control panels, manual call points, and notification appliances work together. Why Is Beam Detection Suitable for High-Ceiling Spaces? A conventional point smoke detector monitors smoke near one sensing chamber. A Beam Smoke Detector uses a long optical path, so a correctly......

A 2-Wire Photoelectric Smoke Detector is a conventional fire detection device that receives power and communicates an alarm condition through the same pair of zone wires connected to a compatible fire alarm control panel. For B2B buyers, selection should focus on electrical compatibility, sensing performance, installation conditions, and commissioning—not appearance alone. This matters for distributors, system integrators, contractors, and OEM buyers. Two detectors can share a similar voltage range but still behave differently on a real conventional zone. A good procurement specification therefore starts with the panel and project requirements. In practice, a 2-Wire Photoelectric Smoke Detector should be approved as part of the complete zone circuit rather than treated as an isolated device. Why Does Panel Compatibility Come First? A 2-Wire Photoelectric Smoke Detector shares power and alarm signaling through one zone circuit. The detector and panel must therefore operate as a matched electrical system. Check the panel’s normal loop voltage, standby-current allowance, alarm-current range, reset method, end-of-line supervision, maximum detector quantity per zone, and remote-indicator requirements. A wide detector voltage range does not automatically mean universal compatibility. For bulk orders, buyers should confirm the detector against the intended panel model before production. Sample testing on the actual panel......

2026 Industry Notice: Rising Raw Material and Chip Prices Are Increasing Fire Alarm Detector Manufacturing Costs In 2026, the fire alarm detector cost structure is facing increasing pressure as prices for semiconductor chips, sensor components, electronic materials, and manufacturing services continue to rise. From CIS image sensors and MCUs to power-management components and structural materials, cost increases across the upstream supply chain are gradually being transmitted to fire alarm detector manufacturers and downstream buyers. For distributors, system integrators, project contractors, and fire alarm equipment importers, closer attention to purchasing schedules, inventory planning, and supplier stability is becoming increasingly important. Direct Materials Represent More Than 80% of Detector Costs Raw materials used in fire alarm detectors can generally be divided into three categories: core electronic components, structural parts, and auxiliary materials. In many detector designs, direct materials represent the majority of total manufacturing cost and may account for more than 80% of the product cost structure. A typical bill of materials may include: Sensor modules, photoelectric components, or CO sensors: approximately 20%–30% MCU, SoC, and communication modules: approximately 15%–25% Power supply and battery-management components: approximately 10%–15% PCB, housing, connectors, buzzers, LEDs, terminals, and other components Photoelectric smoke detectors depend heavily on......

An outdoor fire alarm horn strobe is an audible and visual warning device that uses sound, flashing light, or both to alert people during a fire, security event, or other danger condition. For distributors, contractors and system integrators, selecting the right unit requires more than comparing appearance or sound level. Voltage, alarm current, output mode, environmental conditions and system compatibility all matter. The SR-108 is designed around these project requirements. According to its product specifications, it provides three warning modes: sound alarm, flashing alarm, and sound-plus-light alarm. This makes it suitable for buyers who need one alarm platform for different commercial or industrial applications. What Should Buyers Check When Selecting an Outdoor Fire Alarm Horn Strobe? The first question should be electrical compatibility. The SR-108 specification lists 24V and 220V operating-voltage options. For procurement purposes, buyers should confirm which voltage version is required rather than assuming that one unit automatically supports both inputs. The alarm current also changes according to the operating mode. SR-108 Specification Details Model SR-108 Material ABS Operating Voltage 24V / 220V options Sound + Flash Current Approx. 40mA Sound-Only Current Approx. 25mA Flash-Only Current Approx. 15mA Sound Pressure 85dB, customizable Operating Temperature -10°C to 60°C Environmental......