Colour:white before using equipment Your smartphone or tablet is connected to 2.4g WiFi with internet. You need to turn on the phone bluetooth You have the correct WiFi PWD. Your smartphone or tablet must have access to the / Your router is open Input voltage: 7-32V/USB 5V. Maximum current: 2000W/10A/group. Maximum load: 3500W/164/40ang. Wireless: Wi-Fi 2,4ghz b/g+Bluetooth. Radio frequency: 433Mhz. Working temperature: -20°C-70°C Due to different batches, there may be differences in product appearance, color, and printed text, which not affect the use Material:plastic, Weight: 0.24912235606 Pounds, Manufacturer: puhae