STI Wireless Chimes — STI-3350, STI-3360, STI-3610, STI-3300 Specifications

Specifications for the STI Wireless Chimes family — STI-3350 (Wireless Doorbell Chime), STI-3360 (Wireless Entry Alert Chime), STI-3610 (Wireless Motion-Activated Chime), and STI-3300 (Wireless Doorbell Extender). All models are compatible with each other, so you can distinguish front and back doors with different sensors and chime sounds.

Product Overview

STI Wireless Chimes greet visitors with a pleasant chime and alert you when a door opens or someone enters the detection zone. Transmitters have up to 500 ft. operating range.

How Each Model Works

• Wireless Chime (STI-3350): Mount the wireless button next to your door, plug the receiver into any 120 VAC indoor outlet — ready to operate immediately.
• Entry Alert Chime (STI-3360): Mount the small transmitter and magnet to any door, plug the remote receiver into an outlet. No wiring required. When the monitored door opens, it sends a signal to announce entrance with one of ten selectable melodies or an alarm.
• Wireless Motion-Activated Chime (STI-3610): Mount the motion sensor and plug the chime receiver into an outlet within range. Alerts when someone enters the transmitter's detection zone — 140° x 40 ft. weather-sealed transmitter with adjustable mounting bracket.
• Wireless Doorbell Extender (STI-3300): Connects to your existing hard-wired doorbell system and extends a new chime to hard-to-hear areas. Normally open switch, 16 VAC. Can distinguish front vs. back door by adding a second sensor — first doorbell plays "ding-dong," second plays "dong."

Key Features

• All chimes are compatible with each other; up to 500' operating range
• Ideal for home, store, or office; one year limited warranty
• UL/cUL Listed, FCC and IC Certified
• Quick and easy install — no wiring needed; receiver plugs into any 120 VAC outlet
• Receiver has low/high volume adjustment; supervised low battery alert
• 10 selectable sound options with a push of a button on the sensor (excludes STI-3331)

Selectable Sounds

Ding, Dong, Ding-Dong, Westminster (4-note), Westminster (8-note), Knock Knock, Jingle Bells, Barking Dogs, Bicycle Bell, Buzzer.

Models & Accessories

Sensor Batteries

Specifications

• Frequency: 433 MHz
• Power Source: Receiver plugs into 120 VAC outlet (minimum 110 VAC)

Approvals & Warranty

Tested and approved/listed by UL/cUL (No. S7255), FCC and IC Compliant. One year limited warranty within normal use.

Safety Technology International, Inc. Waterford, Michigan 48327, USA. Tel: 248-673-9898 / 800-888-4784 (4STI). www.sti-usa.com. Subject to change without notice.