Wireless Remote Control Magnetic Sensor Door Window Home Security Burglar Alarm Specification: Model:KS-SFO3R Material: The host is with new import ABS shell, more durable! The remoter is with metal drawing effect, more up-market. Color: The host is white, the remoter is black. Batteries: 2pcs AAA batteries for the host.(Not contain) 1pcs 27A battery for the remoter.(Contain) Battery Standby life time:More than 12months Frequency: 433.92MHz Gap distance of installing (the distance between the host and the magnet): andlt 1cm Magnet detect distance:andgt 1cm Remote control distance:30-60m Alarm volume:108dB (Test distance is 30cm) Operating environment temperatures:-10-and60 Operating environment humidity:R or Handlt 80 percent Storage temperature:-20C-and70℃ Package Includes: 1xMain unit (batteries not included) 1xRemote control 1xInstruction manual Note: 1. Due to manual measurement, please allow 1-3mm error. Please make sure you don't mind before ordering. 2. Please allow 1-3 gram weight error. Please make sure you don't mind before ordering. 3. Due to different lighting in the photos and differences in monitors, the pictures may not reflect the actual colour of the object. Please make sure you don't mind before ordering, thank you! Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.