The basic GSM gate opener RTU5024 is a powerful GSM relay that can be used for authorized door access, gate control, remote device switching, and car parking. It can also be used in situations where you need to turn on/off your system, machines, or equipment remotely with a free call from your mobile phone. Or remove users via SMS. Relay or opening time is programmable. Can be used anywhere, no distance limit. Supports multiple bands, can function in global GSM networks. No need for remote control or keys for different users. Uses number presentation for identification, unknown callers are ignored. Up to 200 authorized phone numbers can be configured at the specified time. An output with relay rating 3A/240VAC for connecting door switches or machine switches. Multiple applications (gates, barriers, barriers, garage doors, blinds, and access doors or machines). Relay action returns an SMS confirmation to the authorized number, this function is editable. No call charges. GSM GPRS relay switch rejects calls from the authorized number and performs ON/OFF action on the first 'ringing'. GSM frequency: -Band 850/900/1800/1900MHz Digital output: NC/NO dry contact, 3A/240VAC DC power supply: 9-24VDC/2A Power consumption: 12V Input Max.50mA/ Average 25mA Supports 3V Antenna: 50 SMA Antenna interface Operating temperature: -20-60 Humidity range: Relative humidity 90% Type: GSM Gate Opener Color: Photo color Material: Plastic Packaging contains: 1 x Relay Switch 1 x Antenna Only the above packaging contents, other products are not included. Note: Light reflection and different screens may cause the color of the item in the image to slightly differ from the actual color. The allowed measurement error is +/- 1-3 cm.