Standalone RF Control Smoke Alarm for Automatic Window or Doors

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