Wireless musical chimes
STI’s commercial grade Wireless Musical Chimes require no electrical wiring and no through-the-wall drilling. All units offer an operating range of up to 500 feet between transmitter and receiver. Select one of 10 sounds (with multiple volume levels) with the push of a button. Because they are compatible, numerous transmitters can link to the same receiver. Distinguish between front and back doors by selecting a different sound on each. UL/cUL Listed, FCC Certified, 433 MHz. Four models are available: STI-3350 (Wireless Doorbell Chime with Receiver); STI-3360 (Wireless Entry Alert Chime with Receiver); STI-3610 (Wireless Motion-Activated Chime with Receiver) and STI-3300 (Wireless Doorbell Extender with Receiver).