Posted on October 20, 2010.
I have a Radionics security system and the need to replace the smoke detectors.a Can anyone tell me what the update would be for ESL 425CTsmoke and heat detectorsa I'm not sure if I should buy two or four wire son. My older son has four.
This seems obvious .... eh
Replace them by four son combination ionization smoke detectors and conventional heat, you'll get from an electrical wholesalers, who will match and be able to give you installation instructions, color codes of wiring, etc.
In addition, they should be able to dispose of your old appliances for you, it is illegal to dispose of ionizing radiation smoke detectors in the trash or burn them as a source of ionization is a slightly encapsulated radioactive capsule, they need to be buried in deep landfill specialist.
