This product is suitable for residential buildings, public gates, organs, schools, hotel buildings, factory warehouses and other departments. High quality iron, iron wire drawing process, anti-corrosion lock surface, durable and aesthetic. It can be used with signals of all intercom and access control systems of the building. Long life (over 500,000 times), high sensitivity, ON/0F. No collision - reduce the choice of door closers and avoid collision noise if the door is not easily deformed. Unlock by mistake or unlock without entering, the door can be locked in 5-8 seconds. The unit is connected by two wires for electronic access. With electronically controlled unlocking unit and spring-adjustable balance unit. The lock is an important maintenance tool for families, nursing homes, schools and other places. Choosing a good lock means choosing security and trust. this lock can help you solve all the problems. it is durable and will not be easily damaged. it is convenient to install and a good choice to monitor your home.