ESP8266 ESP-01 5V 4-Channels WiFi Relay Module for Home Remote Control Switch is 4 channel WIFI relay module carrying an ESP8266 WIFI module and mature 8 bit MCU, with a Professional switching power supply circuit.It could control the relay by Android phone APP within the local area network (LAN). It is easy to set up.

Features:

1. Integrated design.
2. APP remote control.
3. DC 5V work power supply.
4. Onboard high-quality MCU and ESP8266 WIFI module.
5. Support Two Work Mode:
1. Mode 1:cellphone carry on WIFI module directly.
2. Mode 2: Cellphone and WIFI modules carry on router together.
3. Additional features: USB Relay Module(Without ESP8266).
6. Transmission distance:
1. In the open environment, when the mobile phone is carrying on the WIFI module, the maximum transmission distance is 100 meters.
2. When the WIFI module and cell phone carrier on the router at the same time the signal transmission distance depends on the router signal.
7. Use the Smartconfig technology to complete the configuration of the account and password of the ESP8266 WIFI module on the mobile APP. The configured account and password will be memorized after power off.
8. Optocoupler isolated output, safe and reliable.
9. The board contains 220V,10A/250V AC 10A/30V DC Songle original relay, which can continuously absorb 100,000 times, with the protection of diode current and short response time.
10. PCB material and manufacturing process meets the standards of RoHS.
11. Onboard relay LED indicator, mode option and working statue LED indicator.
12. Reserved UART debug interface and MCU download port for the program.

Specifications:

1. Working Voltage: DC 5V
2. Load Voltage: DC 30V 10A /AC 250V 10A
3. Work Temperature: -40℃~85℃
4. Work Humidity: 0%~95%RH
5. Size: 63*60*20mm