PRODUCTS
SR-903 Kitchen Gas Safety Device LPG Leak Detector Sensor with Alarm System
SR-903 detects natural gas and LPG with MCU control, an 85 dB sounder, LED warning and relay output.
Main Features:
Reliable Natural Gas & LPG Detection
High-reliability sensor detects natural gas and LPG leaks with an alarm threshold of 10% ±5% LEL.
Intelligent MCU Processing
Built-in MCU provides stable signal processing, automatic reset and continuous system monitoring for dependable operation.
Audible and Visual Alarm Warning
Delivers a loud ≥85 dB alarm with flashing LED indication to provide fast, clear warning of a gas leak.
Relay Output for System Integration
Relay output supports connection with gas shut-off valves, ventilation equipment or building alarm systems for project applications.
Wide-Voltage and Self-Checking Design
Operates on DC 9–24V and includes a malfunction self-check indicator. Designed with reference to GB 15322, UL 1484 and EN 50194 requirements.
Technical Specification:
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Model No
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SR-903
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Operating voltage
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DC9-24V
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Gas species
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Natural gas &LPG
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Standby current
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less than 90mA/less than 30mA (low power consumption)
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Alarm current
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less than 100mA/ less than 40mA (low power consumption)
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Alarm output
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Relay output &Sound &LED flash alarm
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Installation
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Ceiling mounted
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Sound level
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≥85dB/m
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Alarm level
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10%±5% LEL
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Working environment
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-10℃~+50℃(≤95%RH No congelation)
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Dimension
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100*35mm
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FAQs：
1. What types of gas can the SR-903 detect?
The SR-903 is designed to detect natural gas and LPG. Its alarm threshold is rated at 10% ±5% LEL, making it suitable for residential, commercial and project-based gas safety applications.
2. Can the SR-903 connect to an external gas shut-off system?
Yes. The detector provides a relay output for integration with compatible gas shut-off valves, ventilation equipment or building alarm systems. The connection requirements should be confirmed before installation.
3. What power supply does the SR-903 require?
The SR-903 operates on a wide DC 9–24V power supply, offering flexibility for different alarm systems, control panels and engineering projects.
4. How does the SR-903 warn users of a gas leak?
When the gas concentration reaches the alarm threshold, the detector activates a loud ≥85 dB audible alarm and a flashing LED warning. It also includes MCU processing, automatic reset and malfunction indication.
5. Do you support samples, bulk orders and OEM/ODM services?
Yes. Samples can be provided for product evaluation, and bulk orders are available for wholesalers, distributors and project contractors. OEM/ODM options may include branding, packaging and selected product configurations, subject to order requirements.