Features:

• No lock hole design, it completely abandons the traditional key and lock, in the fully opened and closed by remote control, realized the real security

• Add USB external power source function. Make sure the lock works when battery (not included) was dead.

• Two unlock modes optional: Remote control unlock & indoor button unlock &Tuya APP remote control ( Optional )

• Easy installation on all kind of doors

Specifications:

Host Machine:
Power Supply: 2*AA batteries (not included)
Transmission Frequency: 433MHZ(±500KHZ)
Operation Range: 15m
Unlock Mode: Remote control unlock& indoor button unlock& Tuya APP remote control ( Optional )
Item Size:15.5*9.5*3.5cm

Remote Control:
Battery(Each):1*CR2032 3V ( included )
Standard Number: 4 (included)
Max Controller Number: 16 (not included)
Function: Lock &unlock

Packing List:

• 1 x  019 Tuya Lock;

• 4 x Remote Control;

• 1x WiFi adapter; ( Optional )

• 1 x Installation Accessory Kit;

• 1 x English User Manual.