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semiconductor gas sensor
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gas detector Vietnam photoelectric, 4G Gas and CO Combinatio···
gas detector Vietnam p···
2026-07-29
gas detector Vietnam photoelectric direct from Wanlin Fire Protection — 12-year factory experience, WL-GA203 4G gas detector certified CE/EN50194/UL2075/FCC. Key specs: Electrochemical CO Sensor + Catalytic Gas Sensor + 4G Cat.1 Communication, 4G LTE Cat.1 + Cloud Platform + Dual Alarm (Gas + CO) + SMS/Push/Email + Valve Control. Catalytic/infrared sensor, ···
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boat gas alarm, 4G Gas and Smoke Combination Detector, WL-GA···
boat gas alarm, 4G Gas···
2026-07-29
boat gas alarm direct from Wanlin Fire Protection — 12-year factory experience, WL-GA202 4G gas detector certified CE/EN50194/UL2075/FCC. Key specs: Catalytic Gas Sensor + Photoelectric Smoke Sensor + 4G Cat.1 Dual-Channel Communication, 4G LTE Cat.1 + Cloud Platform + Dual Alarm Channel (Gas + Smoke) + SMS/Push/Email + Valve Control. Catalytic/infrared sen···
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smoke detector with ultrasonic sensor, 4G Smart Combustible ···
smoke detector with ul···
2026-07-22
smoke detector with ultrasonic sensor direct from Wanlin Fire Protection — 12-year factory experience, WL-GA200 4G smart fire protection product certified CE/FCC/RoHS/REACH/ISO9001. Key specs: 4G LTE + Semiconductor Gas Sensor (NG/LPG Dual), 4G LTE + SMS + Push + Phone Call + App + Solenoid Valve Control. No monthly fees, 4G cellular backup, cloud platform,···