The Silent Call Legacy Series signaling system operates at 318MHz transmission frequency and offers a wide variety of signaling and safety options. This system is not compatible with the Silent Call Signature Series products due to different transmission frequencies, but the collection as a whole offers solutions for all of the most sought after signaling options.
Most products for the Silent Call Legacy Series (318MHz) have a transmission range from 100 - 500 feet whereas the majority of receivers and trasmitters for the Silent Call Signature Series (418MHz) range up to 2,000 feet with the exception of the Communication Receiver which receives up to 500 feet.
The Silent Call Legacy Series signaling system offers great security options such as the door/window access transmitter and the transMATTer transmitter. All Legacy Series products require the Sidekick II Receiver as the primary base.