Safety Technology International Inc.
Wireless Doorbell Button with 4 Channel Voice Receiver
STI’s Wireless Doorbell Button with 4-Channel Voice Receiver (STI-V34600) conveniently lets users know when a guest or customer is waiting. When the doorbell button is activated, it sends a wireless radio signal to the voice receiver. The receiver sounds a programmable voice message; select from ten tones/tunes and 53 selectable words (speaks up to four words for each transmitter) in English or Spanish. The product features 500’ range (line of sight) and is supervised for low battery and connection.
https://www.sti-usa.com/Products/Wireless-Doorbell-Button-Alert-STI-V34600.htm