800M Long Distance Outdoor Doorbell Wireless Intercom Door Phone Unlocking Two-Way Intercom 433MHz for Multi-family Apartments

Long-distance hands-free wireless intercom doorbell, supports up to 5 device connections, can freely combine 1V4, 2V3, 3V2, 4V1, a house can install multiple systems without mutual interference, after successful pairing, there is no serial code; can connect to electric lock to open the door, can use remote control to unlock 1. Wireless intercom doorbell no wiring no network required built-in wireless signal two-way intercom hands free supports wireless remote unlocking 2.Adopting 433MHz public channel, with long wireless distance and strong transmission(about 800-1000 meters in open space, indoor 1-6 floors) 3.18650 battery powered, low-power consumption, ultra-long standbytime. 4.Wireless unlocking box design, Tap the key to unlock, easy to install and portable size.Outdoor unit: 1.Power supply: DC5V lithium battery 18650 (1200mA) 2.Support solar charging (optional) 3.Two charging ways:Type-Cport and two-pin terminal. 4.Standby time: ≥ 260 days (1200mA battery) 5.Wireless hands-free two-wayintercom 6.Wireless remote unlock 7.Eachsystemgroup can support up to 5 devices (Random matching indoor and outdoor units) and multiple wireless unlocking devices 8.With IP55 protection level, it can work wellin the rainy and snowy days. 9.One click call, LED indicator, call busy tone 10.LED ：low battery power reminderand charging indication 11.Installation: fix onwall by screws or 3M adhesivefixation 18650 battery powered, low-power consumption, ultra-long standby time.Indoor unit: 1.Power supply: DC5V lithium battery 18650 (1200mA) 2.Wireless charging basedesign, convenient and artistic 3.Type-C charging port 4.Standby time: ≥ 50 days (1200mA battery) 5.Wireless hands-free interco 6.Wireless unlocking 7.Support internal calls (Max.5 indoor units) 8.38 polyphonic ringtones, one click cycle selection 9.Ring volume adjustment 10.LED calling, intercom, unlock, low batterypowerindication 11.Installation: Portable or put on desk, flexible application scenarios Each system group can support up to 5 devices (Random matching indoor and outdoor units) and multiple wireless unlocking devices Wireless unlocking box design, Tap the key to unlock, easy to install and portable size. 1.Power supply: DC5/35v 2.One tapto open the door 3.Mode selection: Normally open ornormally closed 4.Unlock holdingtime:3S, 6S, 8S adjustable 5.Supports up to 10 controllers(Outdoorunit, remote controllers) Adapted lock types: electric control lock, magnetic lock