delay circuit received the enabling signal and began the timing, did not receive closed signals when the delay time reachs, alarm output signal then, and warning circuit reports to the police, indicates the user to close the door according to alarm signal, received closed signals in the delay...
Security System That Announces Which Door Is Open|Adt Window Alarm|4 in 1 Multi-Function:Versatile with General Alarm, Constant Alarm, Time Delay, and Doorbell modes for diverse security needs. Wireless Convenience:Wireless operation with no smart home platform dependency for easy integration into yo...
Battery:2*AAA battery;Material:ABS;Closing door reminder:3/15/30/60s for delayed time;Detection:Magnetic sensor;Certification:CE RoHS FCC;Standby time:over 24 months;Alarm sound:108db;Applications:Window/Door/Freezers/File Cabinets;Installation:Surface M
A door-activated burglar alarm incorporates a firing capacitor that is charged by a battery during the quiescent state of the alarm. The firing capacitor will provide an additional current to fire a buzzer when the alarm is triggered, even if the battery is weak. (Less current is needed to ...
Product name:Door window alarm;Power Source:Battery Powered;Compatible Devices:Home Security System;Control Method:Remote;Maximum Range:25 meters;Sample:Support;Warranty:1 Year Guarantee;OEM/ODM service:Welcome;Place of Origin:CN;GUA;Brand Name:DWRL;Mode
A battery alarm system that is capable of recognizing when a child has opened a door by utilizing self contained electronic circuitry with a switch mounted out of reach of the child. If a child opens the door, the horn sounds. If a taller person opens the door, he can prevent the soundi...
Magnetic emergency exit door lock with time delay A door mounted in a door frame is held closed by an electromagnet mounted on the door frame which magnet attracts an armature mounted on the door. A switch is mounted adjacent to the electromagnet and is operated by a switch operator mou......
6.a variety of alarm function: tamper alarm,illegal door alarm, door alarm delay 7.Wiegand output,seamless integration with all standard controllers Specification: CPU32-bit DSP Fingerprint sensorSubminiature optical fingerprint scanner Fingerprint activation methodopticalsensi...
Supports tamper-proof alarm for card reader, unsecured door alarm, forced entry door alarm, alarm for door opening timeout, duress alarm, and alarm for invalid card swiping attempts alarm, case in alarm and restore, insufficient ...
Color:White;Alarm sound:108dB;Detector Mode:Magnetic door sensor;Size:85*43*14mm;Installation:Surface Mounted;Functions:Normal alarm ,closing-door reminder ,doorbell ,continue alarm;Material:ABS;Including items:1 host, 1 magnetic sensor;power supply:2*AA