# 16A Relay Module (Arduino Compatible)

**Type:** Product page · **SKU:** DFR0251 · **Brand:** [DFRobot](https://core-electronics.com.au/brands/dfrobot-australia)
**Page:** https://core-electronics.com.au/16a-relay-module-arduino-compatible.html ([markdown](https://core-electronics.com.au/16a-relay-module-arduino-compatible.html.md))

A relay is an electrically operated switch, which has a control system (also known as the input circuit) and the controlled system (also known as the output circuit), usually used in automatic control circuit.It is actually "automatic switch" ,using a small electric current to control a larger current.

> ⚠ Warning: this product if used with high voltages (such as 240VAC) requires a license to work with in most regions.

## Pricing

- **Price:** $16.65 (inc GST) — $15.14 AUD, exc GST
- **Quantity discounts:** 6+ $14.38 (exc GST) · 12+ $13.77 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Sep 07 and Sep 09.

## Description

A relay is an electrically operated switch, which uses a small electromagnetic coil to pull a set of contacts together inside the relay, completing a circuit.

Relays are used where it is necessary to control a large electrical load with a low-power signal (with complete electrical isolation between control and controlled circuits), or where several circuits must be controlled by one signal.

This relay would be a good choice for controlling lighting, solenoid valves, motors, or other high current/voltage devices from a microcontroller.

While some of our parts, like this relay, are rated for 240V use, we recommend that those decisions are made by qualified technicians that are licensed to work with mains power: Mains power isn't just lethal. It's lethal.

### Specification

- Contact Rating (Res. Load):16A 277VAC/24VDC
- Maximum switching voltage: 400VAC(NO)
- Max. switching current: 16A
- Max. switching power: 4700VA
- Operate time (at nomi. Vot.): 10ms max
- Release time (at nomi. Vot.): 5ms max
- Type: Digital
- Single relay board
- Digital Interface
- Control signal: TTL level
- Size:37\*29\*22mm
 
### Shipping List

- 1x 16A Relay Module
- 1x Sensor Cable
 
### Documents

- Wiki
- [Datasheet](https://core-electronics.com.au/attachments/localcontent/HF152FDDatasheet_5534265ffa2.pdf)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/d/f/dfr0251.jpg)