This is a 24V 4-Channel Relay interface board, be able to control various appliances, and other equipments with large current. It can be controlled directly by Microcontroller (Arduino, 8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic).
Specifications:
Relay: OMRON G2R-1
Channel: 4
Control voltage: 24 VDC
Coil current: 21.8mA
type: 1 normally open, 1 normally close, single pole
Normally Opened Compatible Load: 250VAC 10A; 30VDC 10A
Action time: less 15ms
reset time: less 5ms
Input/Output connections: Screw terminal block
Wire range: 0.2-2.5mm2
Stripping Length: 6-7mm
DIN rail mountable: 15/28/35mm
Max frequency: 18000 times/h
Relay install: plugged
Flame Retardance: UL94-V0
Module Size: 40mmX86mmX60mm /1.57X3.39X2.36inch (L*W*H)
LED indicator for each relay channel, relay coil protection by means of a freewheeling diode.
The output has a surge protection function
Support AC / DC control signals
Package Content:
1PCS DIN Rail Mount 24V 4 Channels Relay

Built-in Omron relay G2R-1-E certified with UL, Switching current up to 10A at 250VAC or 30VDC.
Each relay circuit is independent and pluggable. Relay status indicator LED, surge suppression protection and overvoltage protection are provided for each relay channel.
Din rail mountable - for width 35 / 32 / 15mm rails. It is convenient and quick to install, firm and stable, and more convenient to disassemble.
NPN&PNP can be interchangeable, AC&DC can be in compatible.
All interfaces can be directly wired out through the terminals. Standard interface that can be controlled directly by microcontroller (Arduino , 8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic).