ABOUT WIRING:The monitor to doorbell need wired with 4 wires. You can connect all 12V electronic locks.
eBay
This Hosmart HY-777/787 7 channel wireless audio intercom is a must-have for your home security needs. With its wireless feature, you can easily communicate with anyone in your home without worrying about tangled cords. The device comes with a power cord, ensuring that it always has enough power to function properly.
eBay
HOMSECUR Video Door Intercom System. Audio interaction is available among indoor monitors just to free your feet when you have multiple monitors installed. Audio Interactive Monitors. IR Distance 2~3m.
eBay
New old stock see pictures for details. 11”x9.5”
eBay
The Videx Intercom Handset 3171 is a specific model for the VX2200 Series 3000 intercom system. This handset, made by the brand Videx, does not come with a battery included, making it important for users to ensure they have a compatible battery readily available. This intercom handset is designed for easy communication within a home or office setting, providing a convenient way to monitor and control access to the premises.
eBay
Modern looking 10" Smart Video Intercom Designed for high-rise buildings and gated communities. For 50 to 50,000 units multi-family buildings and garden style communities. Perfect for any entrance and beyond with 4 Wiegand Input, 4 OSDP Readers, and 8 Relay Output to control doors, gates, or any other relay-controlled electrical system. HD touchscreen display fits in a surface, flush or pedestal mount. Wi-Fi® or ethernet for easier installation and connection to Cloud. 3rd party cellular modem can be used as well. Wireless link to LiftMaster® gate operators to eliminate the need for digging trenches at the gate.
eBay
Pair multiple units to create a room-to-room communication network for enhanced convenience. Whether you’re simplifying family communication, streamlining office workflows, or adding peace of mind to a care facility, this intercom system checks all the boxes.
eBay
NewA pair(set of 2) Channel 1/2/3 selector,power indicator,rotary on/off volume control,automatic noise suppression. The Eagle 3 Channel FM Wireless Intercom is a versatile communication device perfect for households or small businesses. With 2 sets included, each set is equipped with a 3 pin UK plug for convenient power supply. The brand, EAGLE, ensures quality and reliability in transmitting clear and stable signals throughout the intercom system. Ideal for providing a sense of security and communication within a designated area.
eBay