Rascal OPTO Isolating Relays

The Rascal Handy Relays boast 'opto isolation' of input to output for added safety and to ensure circuits are truly electrically isolated.

For maximum versatility you can select the Rascal Relays to either be triggered by a low input (0V) or a high input (12V). The opto isolator input also means that the trigger voltage only draws a tiny 3mA so that it does not overload the device used to trigger it. These superb units are industry standard 12V operation and control the output relays that have a maximum 240VAC 10A rating.

There are 1, 2, 4, 8 and 16 way models so that you can pick the correct Rascal relay to suit your application for a neat and professional job.

Typical uses are for linking and controlling independent systems together such as CCTV, burglar or fire alarms, access control, gate automation, lighting and HVAC but they can be used in multiple ways by the professional installer.

# Quick Links, Manuals & Product Documentation - Handy Rascal Relays

HRM100-HRM116 - Rascal Opto Isolating Relays - PDF Manual

The above manual covers the following models:
HRM100 / HRM102 / HRM104 / HRM108 / HRM116

HRM200 - Rascal Delay ON-OFF Handy Relay - PDF Manual

HRM250 - Rascal Multi-Function Handy Relay - PDF Manual - Quick Start Guide

HRM402 - DC-DC Voltage Booster - PDF Manual

Which Handy Rascal Module should I choose?

Want to delay something switching on or off after applying 12 volts?
For this application choose the basic delay timer code HRM200. When you apply 12V to the HRM200, its relay contacts operate after an adjustable delay of between 0-20 seconds. The relay has both normally open contacts and normally closed contacts so the delay could be switching something either on or off. If you wish to trigger a delay with a short pulse say from a push button you will need a timer that has a trigger input, if that's your requirement have a look at HRM250 as this can be triggered via power on or trigger in.

Want to interface one system to another via a low or high trigger?
If you want to switch something ON or OFF and need to keep the trigger circuit isolated from what you are controlling then choose one of the Opto-Isolators HRM100-116. These superb handy Rascals have their inputs and outputs completely electrically isolated using "Opto-Isolators".

Typically these would be used to interface low voltage systems from an alarm panel or access control system to a mains voltage device such as a light, garage door or similar. Installers frequently use them also to link 2 low voltage systems together, for example, intruder to access control, or an NVR/DVR to an alarm panel. You can trigger these with either a positive or negative signal for versatility and they're available in 1,2,4,8 and 16CH versions.

Want a flexible ON or OFF delay after applying power OR an input trigger signal?
Choose the multi-function timer HRM250 for this. You can set this superb timer to be triggered for either seconds or up to 10 days!! To start the timer you can either simply apply power to it OR use a trigger signal to it, (the simple delay timer HRM200 is only triggered by applying power to it). The HRM250 has 18 functions built in to it that can be used to do a wide variety of control functions and with two separate and adjustable timers built into it, it caters for the professional installers needs. You can even create looped events for repeat triggering of sounders like the VoiceOFF that carry on repeating, or time out after a number of loops you program into it. The non-volatile memory ensures that whatever you set it up to do it remembers that function after a power cut. This is the best choice for flexibility with items such as electric locks, mag locks, sirens etc.