Shenzhen Chitongda Electronic Co., Ltd
wireless-burglaralarm.com
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Low Power 9V Battery Wireless/Wired Burglar Alarm Smoke Detector-YG-03/ Y03
Wireless/Wired Smoke detector with:
*Ceiling or wall mounting; wall-hung installation
*9V battery operated(included)
*Low power comsunption; the battery can work for a long time;
*Test button for easy recommended monthly testing
*Indicator: working: flash once every 25seconds
alarming: flash twice per 1 second