Voice Control Free your hands and control devices with one 4 Channels Smart Relay Switch WiFi + 433RF Remote Control APP remote control, support Tuya Smart and Smart Life app Timing & Schedule Supports types such as timing, countdown, schedule, circulate, random, inching, etc Model: S42 : Less than 0.5W Input: AC 100-240V ~ or DC 5-24V (Do not use both concurrently) Switching Current Per Channel: Less than 10A(NO), Less than 7A(NC) Wireless: WiFi 2.4Ghz 802.11 b/g+Bluetooth RC: 433.92 Mhz Product Size: 3.46 x 2.52 x 0.98 in (The product printed words depending on the batch, but this does not affect use) Color: As Shown Material: plastic Package Contents: 1 x 4CH Switch Module 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.