Description: This GSM door opener with a remote on/off switch for authorized calls for free calls. The GSM gate opener with metal casing. Suitable for industrial control applications. Support for wall mounting. The GSM relay switch answers the call from the authorized number and then performs an on/off operation on the first "ringing". Up to 200 authorized phone numbers can be configured at the specified time. Using caller-ID for identification, unknown callers are ignored. Suitable for doors, elevators, garages, car parking systems, resorts, control rooms, warehouses. Specification: Output:3A/40VAC Power consumption: 12V input, maximum current 50mA SIM card: support 3VSIM card GSM antenna: 50 Ω SMA antenna interface RTU5024 (2G-M26):Sold in Ukraine, Ecuador, Belarus, Colombia, Chile.Frequency: 850/900/1800/1900MHz RTU5024 (2G-208):Not for sale in Ukraine, Ecuador, Belarus, Colombia, and Chile.Frequency: 850/900/1800/1900MHz RTU5024 L-AU (4G):Sold in South America, Australia.Frequency point: B1/3/4/5/7/8/28@FDD-LTE B40@TDD-LTE B1/2/5/8@WCDMA RTU5024 L-A (4G):Sold in U.S., Mexico, etc. Frequency point: B2/4/12@FDD-LTE B2/4/5@WCDMA RTU5024 L-E (4G):Sold in Europe, Middle East, Africa.Frequency point: B1/3/5/7/8/20@FDD-LTE B38/40/B41@TDD-LTE B1/5/8@WCDMA RTU5024T (3G):Sold in Australia, New Zealand, Fiji, Thailand.Frequency: 850/2100MHz UMTS RTU5024C (3G):Sold in U.S., Chile, Canada, South America, Brazil, Mexico, Argentina.Frequency: 850/1900MHz UMTS RTU5024W (3G):Sold in Myanmar, India, Israel, Ireland, Russia, United Kingdom, Belgium, Spain, Austria,Singapore,Sweden.Frequency: 900/2100MHz UMTS Size Chart: Size:82×76×27mm/3.23×2.99×1.06inch Package Includes: 1X Access Controller 1XAntenna 2X Terminal 1X English manual