HX vs D

2 channel GSM Gate Opener 1) Free charges. the call from authorized number then carry’s out the turn ON/OFF 2) Control 2 devices(Gates, bollards, barriers, garage doors, shutters and access doors or machines); 3) Secure - Using caller ID for identification, unknown callers are ignored; 4) Can be operated from anywhere, no distance limit; 5) Call in to be users in 30 mins when the storage mode start,or admin send SMS to add/remove the users. 6) Up to 1000 authorized phone numbers can be configured; 7) Two Digital inputs for door sensor, motion sensors or other sensors to protect your door and windows, when any one of them triggered, will send SMS alert message to admin immediately; 8) 2 relay output, 4 output mode 9) The relay action will return a SMS confirmation to the owner; this function is editable by user; 10) Based on GSM Network, no need any applications. 11)Wired connection function，when the wired interface is in low level,the relay will be forced to turn off.

easily controlling networking devices such as switches, routers, APs, etc