Vandal resistant GSM intercom with rechargeable backup battery and stainless steel front panel. Designed for apartments, gated residences, and offices to provide secure, reliable visitor access and remote gate control. Key benefits Reliable access when mains power fails: built in rechargeable battery provides continued operation and alarm during power outages. The battery recharges automatically when power returns and gives a low battery alert. Secure and durable: rugged stainless steel front and vandal resistant call point with a waterproof lock design for long term outdoor use. Simple visitor handling: visitors press a call button and the unit places a call to up to two phone numbers in sequence, to either mobile or landline numbers. Phone based access control: stored callers can open the door by triggering the onboard relay from their phone. Up to 200 authorized phone numbers can use their mobile phone instead of a key fob. Flexible control and integration: optional dual relay outputs for controlling door openers or alarm components, and remote relay activation while talking with a visitor. Features Outgoing calls: on call button press, dials up to two numbers in sequence, mobile or landline. Caller ID access: known numbers can call the unit and be granted entry automatically when the system recognizes the number and triggers the relay. Toll inbound access: allows up to 200 phone numbers to call the system without charge to the caller, which triggers the onboard relay to activate a gate or door. Onboard relay control: release the door from the handset of the phone while talking to the visitor; supports a press to remotely control the relay during a call. Optional dual relays: two relay outputs available for independent control of gate, door strike, or alarm devices. Front panel installation: no visible screws required; panel locks for easier installation and improved tamper resistance. Materials and protection: stainless steel front panel, waterproof lock design, and vandal resistant construction for outdoor or communal entrance use. Technical and compatibility notes Works with mobile phones and landline phones for outgoing calls and relay activation. Stores up to 200 authorized phone numbers for caller ID based access. Optional dual relay outputs for integration with most gate openers and alarm systems. Size: 1 Color: 2g Typical applications Residential apartment entrance: let visitors call residents directly and allow entry by phone without physical keys or key fobs. Gated community or private driveway: visitors press the call button, an occupant answers on their mobile phone, and a relay opens the gate remotely. Small office or reception building: screen visitors by voice, open the door remotely, and log authorized phone numbers for staff access. What this product solves Eliminates the need to be on site to admit visitors or deliveries. Replaces or supplements physical keys and key fobs with phone based access for up to 200 users. Provides reliable operation during power interruptions with automatic battery recharge and low battery alerts. Offers vandal resistant, weatherproof construction for secure outdoor installation. This intercom combines durable hardware, phone based access control, and battery backed reliability to provide a practical, secure entry solution for apartments, gated properties, and small offices.