Feature: Add or remove users via SMS text commands. Relay close or open time is programmable. Can be operated anywhere, no distance restrictions.Quad-band, compatible with global GSM networks. No need for remotes or buttons for different users.Safe uses caller ID for identification; unknown callers are ignored. Up to 200 authorized phone numbers can be configured at a time.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.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.GSM frequency: Quad-band 850/900/1800/1900MHzNetwork: 4GOutput: NC/NO dry contact, 3A/250VACDC power supply: 9-24VDC/2APower consumption: 12V input, maximum 50mA / average 25mASIM card: Supports 3V SIM cardAntenna: 50SMA antenna interfaceTemperature range: -20C to 60CHumidity range: Up to 90% relative humiditySize: Total length approximately 125mmThe GSM door opener is a powerful GSM relay designed for authorized access control, controlling doors, switching remote devices, and managing parking systems.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.Type: G202 GSM Gate Door OpenerColor: BlackMaterial: ABSPackage Contents:1 x G202 GSM Door OpenerNote: Light reflection and different display settings may cause slight color variations between the image and the actual item. Measurement error allowed is +/- 1-3cm.