ESP32 WIFI Bluetooth 4-Channel Relay Module ESP32-WROOM Development Board

Product View

Detail

A#
Product Features:
1. Equipped with an ESP32 module, supporting remote control and secondary development.
2. Four-channel relay design to meet diverse control requirements.
3. Supports AC 220V input, compatible with a wide range of voltage environments.
4. On-board UART pins for more convenient programming and development.
5. Features four 5V 30A relays for enhanced stability and safety.
Product Introduction:
The ESP32 Four-Channel AC-Powered 30A Relay Module is a relay module equipped with an ESP32 module. In terms of hardware, it features an AC-to-DC transformer module, uses 5V/30A four-channel relays, supports UART programming development, and provides corresponding pin interfaces for easier programming. Software-wise, it supports development using the ESP-IDF development environment or other secondary development software, enabling quick and easy setup and integration into customer products.
Product Parameters:
Voltage Input: AC 220V
Serial Port Voltage: 5V
Module: ESP32E
Dimensions: 87 x 122.5mm
Mounting Hole Diameter: 4mm
Functional Features:
1. Uses the ESP32 module, supporting remote control
2. Reserved UART pins for convenient secondary development use
3. Serial port 5V + AC 220V voltage input
4. Equipped with a 5V 30A relay
Product List:
Four-channel relay module x1
6-pin single row header x1
6-pin dual row header x2
 
 
 B#
 
1: Wide range of applications
2: Onboard mature and stable ESP32-WROOM-32E module, large-capacity 4M Byte Flash;
3: The I/O ports and UART program download ports of the ESP32 module are all led out to facilitate secondary development;
4: Power supply voltage AC220V/DC5-30V;
5: Onboard ESP32 module IO0 programmable button and reset button;
Introduction
AC/DC powered ESP32 four-way relay development board equipped with ESP32-WROOM-32E
WiFi&BLE module, all 1/O ports are led out, support AC220V/DC5-30V power supply mode.
For ESP32
Secondary development and learning, smart home wireless control and other occasions.
Board size: 93*87mm
Weight: 92g
Package List:
1* AC/DC power supply ESP32 four-way relay module
2* 10 double row PIN
1* 6 single row PIN4.
1* Single line cap
 
 
 
 
C#
 
Features:
The Esp8266 four-way 30A relay development board is equipped with an esp-12f WiFi module, the I / O ports are all led, and it supports dc7-28v / 5V power supply mode. It is suitable for esp8266 secondary development and learning, smart home wireless control and other occasions.
 
1. Mature and stable esp-12f WiFi module on board, large capacity 4m Byte Flash.
2. The WiFi module I / O port and UART program download port are all led,It is suitable for secondary development.
3. The power supply mode supports dc7-28v / 5V.
4. Integrated WiFi module RST Reset button and a programmable key.
5. Esp-12f supports the use of eclipse / Arduino LDE and other developers Provides the reference program in the Arduino development environment.
6. Onboard 5V / 30A 4-way relay, output switch signal, suitable for control.Control the load whose working voltage is Within AC 250V / DC 30V.
 7. On-board power indicator, 1 programmable led and relay indicator.
8. Board size: 122.5x87mm    Weight: 160g
 
GND, Rx, TX and 5V of esp8266 record and write port are respectively connected with GND, TX, RX and 5V of external TTL serial port module.
When downloading, 00 needs to be connected with GND, and then disconnect 00 from GND after downloading.
NC relay output: normally closed end, the relay is shorted to com before closing and suspended after closing.
COM: public end. No: normal start, the relay is suspended before closing and will short to com after closing.

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Product View

Detail

A#
Product Features:
1. Equipped with an ESP32 module, supporting remote control and secondary development.
2. Four-channel relay design to meet diverse control requirements.
3. Supports AC 220V input, compatible with a wide range of voltage environments.
4. On-board UART pins for more convenient programming and development.
5. Features four 5V 30A relays for enhanced stability and safety.
Product Introduction:
The ESP32 Four-Channel AC-Powered 30A Relay Module is a relay module equipped with an ESP32 module. In terms of hardware, it features an AC-to-DC transformer module, uses 5V/30A four-channel relays, supports UART programming development, and provides corresponding pin interfaces for easier programming. Software-wise, it supports development using the ESP-IDF development environment or other secondary development software, enabling quick and easy setup and integration into customer products.
Product Parameters:
Voltage Input: AC 220V
Serial Port Voltage: 5V
Module: ESP32E
Dimensions: 87 x 122.5mm
Mounting Hole Diameter: 4mm
Functional Features:
1. Uses the ESP32 module, supporting remote control
2. Reserved UART pins for convenient secondary development use
3. Serial port 5V + AC 220V voltage input
4. Equipped with a 5V 30A relay
Product List:
Four-channel relay module x1
6-pin single row header x1
6-pin dual row header x2
 
 
 B#
 
1: Wide range of applications
2: Onboard mature and stable ESP32-WROOM-32E module, large-capacity 4M Byte Flash;
3: The I/O ports and UART program download ports of the ESP32 module are all led out to facilitate secondary development;
4: Power supply voltage AC220V/DC5-30V;
5: Onboard ESP32 module IO0 programmable button and reset button;
Introduction
AC/DC powered ESP32 four-way relay development board equipped with ESP32-WROOM-32E
WiFi&BLE module, all 1/O ports are led out, support AC220V/DC5-30V power supply mode.
For ESP32
Secondary development and learning, smart home wireless control and other occasions.
Board size: 93*87mm
Weight: 92g
Package List:
1* AC/DC power supply ESP32 four-way relay module
2* 10 double row PIN
1* 6 single row PIN4.
1* Single line cap
 
 
 
 
C#
 
Features:
The Esp8266 four-way 30A relay development board is equipped with an esp-12f WiFi module, the I / O ports are all led, and it supports dc7-28v / 5V power supply mode. It is suitable for esp8266 secondary development and learning, smart home wireless control and other occasions.
 
1. Mature and stable esp-12f WiFi module on board, large capacity 4m Byte Flash.
2. The WiFi module I / O port and UART program download port are all led,It is suitable for secondary development.
3. The power supply mode supports dc7-28v / 5V.
4. Integrated WiFi module RST Reset button and a programmable key.
5. Esp-12f supports the use of eclipse / Arduino LDE and other developers Provides the reference program in the Arduino development environment.
6. Onboard 5V / 30A 4-way relay, output switch signal, suitable for control.Control the load whose working voltage is Within AC 250V / DC 30V.
 7. On-board power indicator, 1 programmable led and relay indicator.
8. Board size: 122.5x87mm    Weight: 160g
 
GND, Rx, TX and 5V of esp8266 record and write port are respectively connected with GND, TX, RX and 5V of external TTL serial port module.
When downloading, 00 needs to be connected with GND, and then disconnect 00 from GND after downloading.
NC relay output: normally closed end, the relay is shorted to com before closing and suspended after closing.
COM: public end. No: normal start, the relay is suspended before closing and will short to com after closing.
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Am 13.01.2026 hat der Verkäufer die folgenden Angaben hinzugefügt:

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