I have a simplisafe home alarm system. All components of the alarm(keypad, base station, sensors, alarm) are wireless, so there are no wires running to any sensors. I wanted to add an additional siren with some bark, not another wireless mediocre "siren" from the manufacture.
I needed a way to trigger a relay to turn on the additional wired siren I purchased, so I turned to taking apart the wireless stock siren. I probed around on the circuit board and found a pair of circuit pads, which were labeled(T6 & T9) But had no wires connected to them. The pads provided battery voltage (6V) when the wireless siren was going off.
So I thought I was all peachy, but when I connected the relay coil to the terminals I found out that the wireless alarm would not operate at all. Is there some kind of diodes or something that needs to be installed inline with the relay to allow the wireless siren to function, and also inturn be able to energize that relay coil ? With the relay not connected, the alarm continues to work properly. I can get a picture of the wireless alarm circuitry, I am not very familiar with the components to name them.