1、Work with an external switch, it has a wire can be used to connect the rocker light switch, it can be installed inside the switch to turn on/off your appliances connected with the switch. 2、Can connect a pair of 2-way switches to turn on/off the downstairs light from upstairs. 3、Lightweight and portable, it only takes up very little space when installed into various types of switch boxes, even the EU standard switch box. 4、You can control appliances in your home via the eWeLink anywhere and anytime. 5、Turn on/off devices in a completely hands-free way by connecting with Amazon-Alexa or -Assistant. 6、Set the time automatically turn on/off. 7、Support share the device to your family or friends, they can control it directly on their phones. 8、If you\u0027re not at home, you can also know your device is on or off through the eWeLink APP. This is a mini and portable DIY intelligent switch, it is can be used for different kinds of switch boxes. It can automate your home appliances with eWeLink APP via your smartphone or tablet or your voice control. Features: Work with an external switch, it has a wire can be used to connect the rocker light switch, it can be installed inside the switch to turn on/off your appliances connected with the switch. Can connect a pair of 2-way switches to turn on/off the downstairs light from upstairs. Lightweight and portable, it only takes up very little space when installed into various types of switch boxes, even the EU standard switch box. You can control appliances in your home via the eWeLink anywhere and anytime. Turn on/off devices in a completely hands-free way by connecting with Amazon-Alexa or -Assistant. Set the time automatically turn on/off. Support share the device to your family or friends, they can control it directly on their phones. If you're not at home, you can also know your device is on or off through the eWeLink APP. Specifications: Item type: Switch Material: PC V0 Quantity: 1PC, 2PCS, 4PCS, 8PCS, 10PCS(optional) Input: AC100-240V 50.60Hz 10A Max Output: AC 100-240V 50/60Hz 10A Max Wi-Fi: iEEE 802.11b/g/n 2.4gigahertz Package weight: 1PC: 50g/1.76ounces 2PCS: 100g/3.52ounces 4PCS: 200g/7.05ounces 8PCS: 400g/14.1ounces 10PCS: 500g/1.1pounds Package size: 1PC: 60*50*25mm/2.36*1.96*0.98inches 2PCS: 100*60*25mm/3.93*2.36*0.98inches 4PCS: 200*60*25mm/7.87*2.36*0.98inches 8PCS: 400*60*25mm/15.7*2.36*0.98inches 10PCS: 500*60*25mm/19.6*2.36*0.98inches Note: 1.The antenna has strong electricity inside, do not break the wire jacket. 2.To make sure the stable RF signal, please keep the wire away from the metal component in the switch box when wiring. Package list: 2PCS * Switch 2PCS * Switch