Realistic Police Car Siren For Diecast Vehicles Color_Ice Blue it will only ever activate

it will only ever activate the line-of-sight receiver

wired 7 inches from the circuit

Thanks to Sam and Mickey for this great picture of Advertiser Signs in use

get a 2nd receiver and arrange them so the remote can activate both

7-12 volt battery / regulated adapter Your own battery

Realistic Police Car Siren For Diecast Vehicles Color_Ice Blue it will only ever activateRealistic Police Sound for your Diecasts! This Police Car Siren has 4 realistic sounds: Wail, priority, phaser, and airhorn mix Priority Phaser Wail A momentary switch (6mm square) is wired in. Press the switch once for the 1st sound, again for 2nd, etc. 5th press turns it off. We include a 9 volt battery snap with on off switch to run this circuit The 2 power leads connect to any 9 volt DC battery source or, run this siren on a 7. 2 volt RC LiPo