Feature: Add or remove users via SMS text commands. Relay close or open time is programmable. Can be operated anywhere, no distance restrictions.<br> Quad-band, compatible with global GSM networks. No need for remotes or buttons for different users.<br> Safe – uses caller ID for identification; unknown callers are ignored. Up to 200 authorized phone numbers can be configured at a time.<br> One output with a relay rating of 3A/240VAC for connecting a door or machine switch. Suitable for multiple applications including doors, bollards, barriers, garage doors, shutters, access doors, and machines.<br> The relay action sends an SMS confirmation to the owner or authorized phone; this feature can be customized by the user. No call charges. The GSM GPRS trunk exchange rejects calls from unauthorized numbers and performs an open/close operation upon the first ring.<br> GSM frequency: Quad-band 850/900/1800/1900MHz<br> Network: 4G<br> Output: NC/NO dry contact, 3A/250VAC<br> DC power supply: 9-24VDC/2A<br> Power consumption: 12V input, maximum 50mA / average 25mA<br> SIM card: Supports 3V SIM card<br> Antenna: 50SMA antenna interface<br> Temperature range: -20°C to 60°C<br> Humidity range: Up to 90% relative humidity<br> Size: Total length approximately 125mm<br> <br> The GSM door opener is a powerful GSM relay designed for authorized access control, controlling doors, switching remote devices, and managing parking systems.<br> It can also be used in applications where a system, machine, or device needs to be turned on or off remotely using free calls from a mobile phone.<br> Type: G202 GSM Gate Door Opener<br> Color: Black<br> Material: ABS<br> Package Contents:<br> 1 x G202 GSM Door Opener<br> Note: Light reflection and different display settings may cause slight color variations between the image and the actual item. Measurement error allowed is +/- 1-3cm.