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For Delkim Alarms Only - These will not work with any other make of alarm.  Non-Delkim owners, please see our other bite indicators.
 
Black frost bite indicator with all black cord and a Straight Jack Plug.
 
They will fit any alarm with a 2.5mm jack plug power output. 
 
These are great for any alarm with the power output on the bottom of the alarm.
 
We use ultra-bright LEDs in all our hand craft bite indicators, so they light-up strong, even through the Black bobbin head.
 
Delkim owners: 
These will not work with Delkims, please see our Delkim specific range.