RTU5024 GSM Gate Opener Relay Switch Remote Control Door Access Wireless Door Opener By Free Call 850/900/1800/1900MHz ,Easy to Operate

- Add or remove users by SMS Text com mand. - The relay close or open time is programmable. - Can be operated from anywhere, no distance limit. - Quad-band, can work in the worldwide GSM Networks. - No need to provide a remote control or keys for different users.