ESP8266 Wire~Less Wi~Fi Transceiver Relay Module, 4 Channel DC 5V Smart Switch Relay Module for Smart Home Automation System IOT A~PP Con~Troller
- SUPPORT TWO WORK MODE: Mode 1: cellphone carry on WIFI module directly. Mode 2: cellphone and WIFI module carry on router together..
- TRANSMISSION DISTANCE: In the open environment,when mobile phone is carrying on the WIFI module ,maximum transmission distance is 100 meter. When the WIFI module and cell phone carrying on the router at the same time the signal transmission distance depends on router signal..
- SAFE: Optocoupler isolated output, safe and reliable..
- LED INDICATOR: On board relay LED indicator , mode option and working statue LED indicator..
- SHOP WITH CONFIDENCE: To Provide You With the Highest Quality Service, If You Have Any Question, Please Feel Free to Contact Us.We Will Provide After-sales Service Until You Are Satisfied..