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The Arduino 4 Relays Shield is a solution for driving high power loads
that cannot be controlled by Arduino's digital IOs, due to the current
and voltage limits of the controller.

The Shield features four relays, each relay provides 2 pole changeover
contacts (NO and NC); in order to increase the current limit of each
output the 2 changeover contacts have been put in parallel. Four LEDs
indicate the on/off state of each relay.


Operating Voltage


Coil current consumption

140 mA (with all releays on, about 35 mA each)

Single pole chargeover contact maximum current

@ 30 V DC 2A

Maximum load voltage

48 V

Maximum switching capacity

60 W


The shield doesn't need external power: it will be provided by the
base board, through the 5V and 3.3V pins of the Arduino board used as

Input and Output

The relays are controlled by the following Arduino board pins:

* Relay 1 = Arduino pin 4
* Relay 2 = Arduino pin 7
* Relay 3 = Arduino pin 8
* Relay 4 = Arduino pin 12

The shield features several TinkerKit input/output and communication
interfaces. Connecting TinkerKit modules can simplify the creation of
a project or a prototype.

The on-board connectors are :

* 2 TinkerKit Inputs: IN2 and IN3 (in white), these connectors are
routed to the Arduino A2 and A3 analog input pins.
* 2 TinkerKit Outputs: OUT5 and OUT6 (in orange), these connectors
are routed to the Arduino PWM outputs on pins 5 and 6.
* 2 TinkerKit TWI: these connectors (4-pin in white) are routed on
the Arduino TWI interface. Both connect to the same TWI interface to
allow you to create a chain of TWI devices.

Physical Characteristics

The maximum length and width of the 4 Relays Shield PCB are 2.7 and
2.1 inches respectively. Four screw holes allow the Shield to be
attached to a surface or case. Note that the distance between digital
pins 7 and 8 is 160 mil (0.16"), not an even multiple of the 100 mil
spacing of the other pins.


The shield is compatible with all the Arduino boards, 5V and also 3.3V


Click 'show more' to display specifications.

General information

Manufacturer Arduino
Product type Entwicklungsboards + Kits
Item number5998102
Manufacturer no.A000110

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Warranty & right to return

Warranty 24 month Bring-in

Limited right of return

Warranty and return

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Mail delivery

 Expected delivery time: approx. 8–10 days
Currently > 5 piece(s) in stock at the supplier


All locations

 Expected delivery time: approx. 8–10 days
Currently > 5 piece(s) in stock at the supplier

If ordered immediately.
Information subject to change.

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Arduino 4 Relays Shield Arduino 4 Relays Shield