Powerful relay for authorized access control, door control, switching of remote devices and parking systems. It can also be used where there is a need to remotely turn on/off a system, machine or device via a free phone call from a mobile phone. Use caller ID for identification, ignore unknown calls; operate anytime, anywhere, without distance restrictions; add or delete users through SMS commands; no need to provide remote control for different users; up to 999 authorized phone numbers can be configured. Relay rated output, used to connect door or machine switch; relay action will return SMS confirmation to the owner, this function can be edited by the user. Very simple device that can be used for authorized access control, controlling gates, switching remote devices and parking systems. In fact, it can be used where you need to remotely switch on/off systems, machines and equipment via a mobile phone call and protect your assets., Manufacturer: MNMIOIO