The Yocto-LatchedRelay device contains a USB-driven latching relay switch: you can drive by software the relay input to one of the two outputs. To make it easier to test your project, two leds positioned on each side of the connector show the output currently active.

Being latched, the relay keeps its state even when the device is not powered. The Yocto-LatchedRelay also features a button and an input allowing to manually switch the relay.

The relay and the connector can stand 220V and a current of 8A. Be aware that using a relay to drive inductive loads (motors, transformers) may lead to accelerated aging of the relay. Please refer to the documentation for hints on reducing this type of problems.

This device can be connected directly to an Ethernet network using a YoctoHub-Ethernet, to a WiFi network using a YoctoHub-Wireless-g, it can even be connected to a GSM network thanks to the YoctoHub-GSM.

Yocto-LatchedRelay Yocto-LatchedRelay Yocto-LatchedRelay The relay can be switched manually

USB cables and enclosure to be ordered separately.

CHF 32.83

   Add to cart


Manufacturer Product NumberYLTCHRL1
Product nameYocto-LatchedRelay
USB connectormicro-B
Max switching current8A
Max switching power2000W
Max voltage250V
Supported Operating SystemsWindows, Linux (Intel + ARM), Mac OS X, Android
Driversno driver needed
API / SDK / Libraries (USB+TCP)C++, Objective-C, C#, VB .NET, Delphi, Python, Java/Android
API / SDK / Libraries (TCP only)Javascript, Node.js, PHP, Java
Made inSwitzerland

Related articles and application examples

 New product: the Yocto-LatchedRelay  What about the enclosure for the LatchedRelay?  Switching a relay via an SMS  Yoctopuce relays and their secrets  Controlled-environment cultivation 
 A WiFi desk lamp  A USB food dispenser  Managing the heating of a chalet with a YoctoHub-GSM-2G  Implementing a Yoctopuce application in Delphi 

Accessories and related products

PowerSocket, Screw connector socketFix-2.5mm, screws and spacersFixPlate-X2, Fixing plate for 2 modulesUSB-A-MicroB-30, A to micro-B USB data cable, 30cm


User manual (HTML)
User manual (PDF)
3D file (STEP)
Last Firmware24473 (06/20/2016)
Library for Javascript28028 (07/10/2017)
Library for PHP28028 (07/10/2017)
Library for Objective C28028 (07/10/2017)
Library for C++28028 (07/10/2017)
Library for C#28028 (07/10/2017)
Library for VisualBasic .NET28028 (07/10/2017)
Library for Delphi28028 (07/10/2017)
Library for Python28028 (07/10/2017)
Library for Java28028 (07/10/2017)
Library for Android28028 (07/10/2017)
Library for Command line28028 (07/10/2017)
Virtual Hub for Windows28080 (07/15/2017)
Virtual Hub for Linux, Intel + ARM28080 (07/15/2017)
Virtual Hub for Mac-OS-X28080 (07/15/2017)

Add a comment One comment

1 - funky81 Friday,may 17,2013 20H57

Any suggestion to add latchedrelay if I already use / buy PowerRelay and MaxiRelay ? :(

Yoctopuce, get your stuff connected.