dual stage shock sensor with 3 wires

My alarm came with a two-stage shock sensor with only one adjustment, so I bought a dual-stage, dual adjust one.  Odd that yours only has three wires.  Typically there will be 4 wires:

1. +12VDC

2. GND

3. ZONE 1 (WARN)

4. ZONE 2 (ALARM SOUND)

Both of my sensors, all had 4 wires.  Are you sure its a dual zone?  Are there (2) LED's?

Dual-stage, dual-adjust sensors are not very expensive.  I bought mine for under $7.00 from a electronics surplus store on Ebay.  It was new, but didn't come with any instructions or a wire harness.  I used my existing shock sensor harness.  You really don't need any instructions if you are familiar with how they work and have a DVM.

I also wired in hidden defeat switches to defeat zone 1 and/or  zone 2 triggers should I be in an area that may falsely set off my alarm.

- Jim

Design Engineer, Axcera LLC

The DEI alarms work off of time, not individual wires.  You can cut the blue and green and put them together on the green input wire and the shock sensor will retain both stages.  I believe the warn away is shorter then 0.8 seconds and the alarm is over 0.8 second pulses.

You would almost have to check this with an oscilloscope, or just pick up a cheap DEI dual stage shocksensor and give it a try.

Red - power

black - ground

blue - tie to green

green (and blue) - signal