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ESP-01S module with relay V4.0 250V 10A ESP8266 WiFi ESP01 opto-isolation
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Description
Relay module V4.0 with ESP-01S for ESP8266
A kit that lets you easily control a relay over wireless WiFi connectivity. The set includes a ESP8266EX (ESP-01S) wireless network module and a relay board in version 4.0. Unlike older versions, this module requires no modifications or soldering-it is ready to use as soon as it is connected.
Key technical features
The ESP-01S module is an improved S-series version, fully compatible with the previous model. It offers improved operating stability, better PCB antenna range, and clearly labelled pinout on the back. The relay features opto-isolation, which significantly increases the safety of the control circuit.
ESP-01S module specifications
- Supply voltage: 3.3 V
- Current consumption: 300 mA
- Flash memory: 1 MB
- Operating standards: WiFi 802.11 b / g / n
- Operating frequency: 2.4 GHz
- Operating modes: Access Point, Standalone, AP+STA
- Control: AT commands via UART
- Antenna: PCB
- Digital I/O: 3 x GPIO
- Communication ports: 2 x UART (TX, RX)
- Supported security: WPA / WPA2
The module is supplied blank, with no application programmed. Some units may have a mounting hole between the antenna end and the diode.
Relay V4.0 relay specifications
- Circuit supply voltage: 5 V
- Maximum relay load (AC): 10 A at 250 V
- Maximum relay load (DC): 10 A at 30 V
- Dimensions: 37 mm x 25 mm
Example applications
- Remote lighting control in smart home systems
- Wireless switching of everyday appliances
- Driveway and garage gate automation
- Garden irrigation system control
- Power management in IoT projects with Arduino and Raspberry Pi
Benefits
- No soldering required-V4.0 is ready to use straight out of the box
- High safety-built-in opto-isolation protects the microcontroller from interference
- Stable connectivity-improved antenna on the ESP-01S ensures reliable WiFi range
- Compact size-the 37 mm x 25 mm module fits easily in small enclosures
- Versatility-control devices powered by both DC and AC
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