Voice and light alarm: 108dB loud alarm and bright light can scare away thieves and intruders effectively, Magnetic sensor alarm: Sensitive, lower false trigger rate Multi-function security alarm: It has arm, disarm, emergency alarm and doorbell function, largely meet your demand, Easy operation: With the remote control, it will be very easy to use, window door alarmEasily arm by pressing the arm key. Once triggered, the very powerful 108 db voice comes with a flash lamp. For intruders, it will be a terrible nightmare and an exceptional deterrent. Main parameters Alarm type: wireless Detector Mode: Magnetic Sensor Alarm Sound: 105db Hardware: ABS Alarm output: sound and light Remote distance: 50m Host power supply: 2 * AAA batteries (not included) Power supply for remote control: 27A 12V alkaline battery (not included) When the baby / children try to open the balcony window and get out, the loud voice stops them and alerts the parents. This security alarm is also suitable for individual apartments, rental units, shops, to shopping malls and residential houses. Height weight Host size: 84*38*16.7mm Quantity sold: 1 piece Simple installation There are double-sided adhesives on the host and the magnetic bar, just peel and stick for them. install on door, window or anywhere else. Please note: 1) Make sure the 2 parts align to scale, 2) The distance between them is about 10mm. Easy Operation 1) Arm key: press it, when triggered, the alarm will sound, 105db, 2) Disarm key: press it, arm status or loud voice will stop, 3) SOS key: Press this key under armed status, the alarm will sound 105dB, even if the host is not triggered. This function will be very useful when someone is in danger or need urgent help. 4) Doorbell key: press it, when triggered, it will ring "dingdong" to warn you that someone is coming. More options 1) Additional remote controls are available from us, need to be paired with the host, 2) One remote can associate and control up to 50 host items, 3) One host can be controlled by maximum 8 remotes.