Communication mode:TTlock app Emergency lockout:Type-C-USB Standby power consumption:10 Supplier Type:Bluetooth Product name:Bluetooth Wifi Gateway Communication mode:bluetooth 4.0 Power supply:DC 5V/500mA power supply:4pcs AAA batteries. Not included Voltage:3V Standby power consumption:less than 10μA Note: To use the keypad, check if your lock has a "wireless keypad" option in the "setting" of the ttlock app,A "wireless keypad" can be connected to your lock only if your lock supports it on ttlock app! Please check as much as possible to make sure the item is what you need. Tips:The product may be updated constantly,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use. Colour:Black Material:Plastic Package Contents: 1 * TTlock Door Lock Code Switch Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.