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433MHz Wireless Smoke Thermal Sensor Fire Heat Detector with Voice Prompt 85dB Sound for Focus Alarm Host ST-VGT HA-VGW ST-IIIB
RISE-5 Pcs DC 3-24V 85dB Sound Electronic Buzzer Alarm Black 23 x 12mm
Independent / Wireless Smoke+Heat Detector Temperature Sensor Kitchen Fire Alarm Sensor for Wireless WIFI GSM PSTN Alarm