Wireless doorbell + Ding Dong

Specification of plug-in Dingdong machine:
Voltage: AC90V-260V
Frequency: 433MHz
Output power: 0.15W
Standby power: ≤10mW
Sensitivity: -112dbm
Volume: the highest 100db, the lowest is silent

Technical indicators of wireless battery video doorbell:
Resolution: 640X480
Viewing angle range: 90°
Infrared lamp: 6*850mm
wifi: Support 2.4G WIFI IEEE802.11b/g/n
Audio: Two-way conversation without noise
Recording: Device SD card recording (20 seconds)
Storage: Support 32G (not included) & Cloud Storage
Battery: 1*18650 4000mAh Battery (charge 4-8h for first use. Power Input: MICRO USB 5V/2A
Monitoring: device buttons, motion detection, remote real-time display
Notification: Quick push notification
Device wake up: fast wake up and push notification
Power consumption: Standby power consumption 200μA, working 170mA
Indicator Light    Red light solids on: the camera network is abnormal
Red light blinking: waiting for connecting WiFi or being conn