Latching Relay for Touchless Faucet Sensor

I am using a touchless faucet to try and control the turn on/off of a 12v 5 amp water pump for an outdoor sink. I am unsure of the type of sensor the faucet has but it has two leads that when it senses hands in front of the sensor it sends out a positive pulse of 3v, then when hands removed it sends out a negative pulse of 3v through the two leads.

I would like to control this without an arduino board and just use a 12v latching relay. Something like HiLetgo 12V Single Bistable Self-Locking Relay Module

I have tried this but the 3v from the sensor pulse seems to damage the board.