The device can only be powered with DC5V input voltage, can't connect 100-240VAC voltage. If you need to mount the device on wall , you need to buy a extra converter of AC 110 220V to DC 5V to install on the device to power it, otherwise you can only put it on desk with type C cable to power it State of Assembly: Ready-to-Go Power Supply: DC5V/1A Power interface: Type-C or DC 5V wiring AC-DC Converter: Not included in the box Wi-Fi Type: 2.4Ghz Wi-Fi Standard: IEEE802.11b/g/n Wireless Range: 45m Working CUrrent: 550mA Standby Current: 25mA Temp Detection range: -10 to 60 degree Humidity Detection Range: 0-90% (no condensation) Temp Detection Accuracy: + - 0.3 degree Humidity Detection Accuracy: + - 5% RH Bluetooth version: Bluetooth 5.0 Remote Control Distance: 7M Voice Control: Google Home, Amazon Alexa color:White Material:plastic Package Contents: 3 x humidity controller