9V Battery Smart Home Dooya Wireless RF Heat Detector/Automatic Shutter Window Actuator Smoke Alarm Detector

roller shutter sensor radio fire smoke alarm sensors for Electric smoke exhaust windowWireless fire smoke alarm for roller shutter with linkage function specifications:The wireless smoke alarm is mainly used to control roller shutter window or automatic window, When a fire occurs, the smoke alarm sound an alarm, and then send a radio RF signal to the motor controller to open roller shutter or window. So that you can use the least amount of time to escape danger.1. Main unit: Linkage function2. Voltage: DC9V3. Emission distance: >50m4. Wirless convenient for instalApplication  /* January 22, 2024 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(",").forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1