pdf-icon

Module13.2 4Relay

SKU:M121

Description

Module13.2 4Relay is a relay module compatible with M5Core/Core2 controllers, featuring 4 mechanical relay control channels (NO, COM). The module uses the I2C communication protocol, effectively saving IO resources. The jumper cap design allows switching between active/passive working modes to meet different circuit requirements. This relay module only supports DC circuit switching, with a maximum load capacity of 24W (DC 24V@1A) per channel, making it suitable for controlling small load circuits.

Features

  • Embedded STM32F030F4 controller:
    • I2C communication interface (addr: 0x26)
  • Relays:
    • 4 x relay control (COM, NO interface)
    • Maximum load capacity 24W (DC 24V@1A)
  • Supports two working modes (controlled by jumper caps):
    • Active control:
      • Power input connected to the relay NO interface, directly powering the load.
    • Passive control:
      • Power input not connected to the relay interface; user circuit must include power.
  • Power input (DC only):
    • DC 5-24V INPUT -> M5 BUS HPWR bus (controlled by jumper caps, when stacking multiple M5 modules, the HPWR bus can power other modules requiring 24V, such as the SERVO2 module)
  • Development platforms:
    • UIFlow (coming soon), Arduino

Includes

  • 1 x 4Relay Module
  • 5 x 2.54mm-2P terminal blocks (green)
  • 10 x jumper caps
  • 1 x wiring manual

Applications

  • Solenoid valve control
  • DC circuit switching

Specifications

Specification Parameter
Communication interface I2C (addr: 0x26)
Supported working modes Active control / Passive control
Number of relay channels 4x (COM, NO interface)
Power input interface DC5521 female jack 5.5 x 2.1mm@5-24V (inner positive, outer negative)
Load capacity Maximum load capacity 24W (DC 24V@1A)
Relay terminal block spec 2.54-2P
Single relay power consumption 5V@40mA
Coil actuation time 6ms
Coil release time 4ms
Net weight 37.2g
Gross weight 37.6g
Product Size 54.2 x 54.2 x 13.2mm
Package Size 95 x 65 x 25mm

Learn

Jumper cap usage instructions

Schematics

PinMap

M5Core GPIO22 GPIO21 5V GND
Module13.2 4Relay SCL SDA 5V GND

M5-Bus

PIN LEFT RIGHT PIN
GND 1 2
GND 3 4
GND 5 6
7 8
9 10
11 12 3V3
13 14
15 16
SCL 17 18 SDA
19 20
21 22
23 24
HPWR 25 26
HPWR 27 28 5V
HPWR 29 30

Datasheets

Softwares

Arduino

UiFlow1

Internal Firmware

Video