433mhz function + WiFi function in one, more intelligent and humanized. 433MHz + voice control + application control + on / off It is especially suitable for the elderly, lactating mothers, pregnant women, the disabled and children. Countdown function,You can set the countdown of humidifier, microwave oven, coffee machine, etc. The device stop automatically. Don't worry about the equipment working all the time. The master account has exclusive permissions. Click to share permissions with the entire family. Let family enjoy the fun of smart life. Wireless Switch:1. Working voltage: DC 3V (CR2032 3V battery) 2. Working frequency: 433.92mhz 3. Transmission power: 10MW 4. Remote control distance: 100m (open space) 5. CR2032 battery, standard battery, can be used for about 1 year 6.2 fixing method: screw + double-sided adhesive Controller parameters: 1. Working voltage: ac85-240v 60Hz / 50Hz 2.WIFI:IEEE 802.11b/g 2.4Ghz 3. working frequency: 433.92mhz 4. Maximum current: 10A (The product printed words depending on the batch, but this does not affect use) Color: Black Material: ABS Package Contents: 1 x Switch 1 x Remote Control 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.