Safety Technology Int'l Inc STI-3300 Doorbell Extender Chime

Product Description

The SAFETY TECHNOLOGY INT'L INC STI-3300 is a doorbell extender chime designed to amplify or extend doorbell notification to areas where the original chime signal may not reach. It connects into an existing doorbell circuit and provides an additional audible alert point within a building. This type of device is commonly installed by electricians and low-voltage technicians in residential and light commercial settings where coverage gaps exist in the notification system.

The STI-3300 is suited for use in larger homes, multi-room facilities, or any structure where the primary doorbell chime is not audible throughout the occupied space. It integrates with standard doorbell wiring systems to deliver reliable secondary chime output without requiring a separate power source beyond the existing low-voltage circuit.

Key Features

• Extends doorbell chime coverage to areas beyond the primary unit
• Compatible with standard low-voltage doorbell wiring configurations
• Sold as a single unit per package
• Designed for straightforward integration into existing doorbell circuits

Compatibility

Designed as an OEM-style replacement or add-on extender chime for standard residential and light commercial doorbell systems using conventional low-voltage wiring.

Installation Notes

Installation should be performed by a qualified electrician or licensed low-voltage technician in accordance with applicable NEC requirements. Power down the doorbell transformer and confirm zero voltage at the circuit before making any wiring connections. Do not connect to line-voltage circuits. Follow the manufacturer data sheet for proper wiring terminal assignments specific to this unit.