【PIR detection and 140° Wide View Angle】. You can monitor (handheld including smartphones, Android tablets) and one-way intercom with noise reduction. 【One-way intercom brings convenience】.
eBay
Tuya WiFi/ZigBee Door Window Sensor Smart Home Wireless Door Open Close Detectors APP Remote Alarm Work with Alexa Google Home
Aliexpress UK
This device allows for remote monitoring, providing added safety and convenience. During that process you will be issued with an RMA number. Type Door spy hole. Transfer type Wi-Fi. Sensor type CMOS.
eBay
Tuya WiFi/ZigBee Door Window Sensor Smart Home Wireless Door Open Close Detectors APP Remote Alarm Work with Alexa Google Home
Aliexpress UK
No wi or drilling required. Standard features such as instant notifications, Live View and Two-Way Talk are available out of the box and for free on all devices. Works with Alexa.
eBay
Wireless Doorbell IP44 Waterproof Smart Home Welcome Door Bell 300M Range 60Songs Intelligent Home Chime Bell Kit US/EU Plug
Aliexpress UK
It is compatible with AHD images and videos. Color:Black+Grey. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.
eBay
Wireless Doorbell for Home Outdoor USB Door Bell DC 5V RF433 MHz Pairing Remote Control 30 Ringtongs Volume Adjust Bed Care Call
Aliexpress UK
PIR Motion Detect Alarm. PIR Motion Detect. Easy Installation (no need any cable), just Wifi connection. Double stream. Support max 8-128GB TF card(save Video recording). 2.4GHz WiFi IEEE 802.11b/g /n.
eBay
RF433 MHz Wireless Doorbell Outdoor For Home USB Smart Door Bell Pairing Remote Control 60 Ringtongs 5 Levels Adjustable Volume
Aliexpress UK
2.4" LCD visual monitor with one outdoor door peephole,picture pixels is 300000,clear image and LCD screen to traditional doorbell,it can show images clearly and smoothly. Peephole viewing angle:150 degrees.
eBay
CACAZI wireless doorbell 500M 60 ring 5 volume A78 US EU UK plug household cordless doorbell 1 2 button 1 2 3 receiver
Aliexpress UK
Type: Peephole Doorbell. Door Hole Range: 14-28mm. Door Thickness Range: 35-100mm. Indoor Parts Size: About 120 62 20mm. 1 Indoor host. Function: Energy Saving, Low Power Alert.
eBay
32 Songs Wireless Doorbell Welcome Door Bell Chime Remote Transmission Smart Home One Click Emergency Security Alarm US EU Plug
Aliexpress UK
Type: Peephole Doorbell. Equipped with a 120° wide-angle lens, clear insight into the details outside the door to reduce safety hazards. 120° Wide-angle Lens Applicable to door thickness: 35mm-100mm.
eBay
433MHz DC12V Wireless Remote Control Special for Glass Door Smart Lock Door Release Opener Transmitter Access Remote Key
Aliexpress UK