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STI Wireless Chime Series – Doorbell, Entry Alert, Motion, and Extender Systems
STI Wireless Chimes deliver reliable audio alerts for residential and commercial use without the need for complex wiring. The system includes a series of compatible devices: wireless doorbells, motion detectors, entry alerts, and extenders—all designed for quick plug-and-play operation. Each model can be paired with up to 10 transmitters per receiver, supports a 500-foot range (line-of-sight), and offers distinct chimes for easy identification. Ideal for homes, offices, or stores, this UL and FCC-certified series provides dependable notifications and user-friendly setup.
Key Features
- Wireless range up to 500 ft (line of sight)
- Add up to 10 transmitters per receiver
- Compatible across all STI Wireless Chime devices
- Up to 10 sound options (model-dependent)
- No wiring required (except STI-3331 Extender)
- Receiver plugs into 120 VAC indoor outlet
- Tamper-resistant, weather-sealed transmitters
- Easy installation – ideal for home, store, or office
- UL/cUL listed (except STI-3300 & STI-3331)
- One-year limited warranty
Manufacturer Resources
VIEW SPEC SHEET
Product Specs
- Certifications:
- UL/cUL (except STI-3300/3331), FCC & IC Compliant
- Frequency:
- 433 MHz
- Installation:
- Plug-and-play; no wiring (except STI-3331)
- Operating Range:
- Up to 500 ft (line of sight)
- Parent SKU:
- STI-WIRELESS-CHIME-SERIES
- Power Source:
- Receiver plugs into 120 VAC; Transmitters battery-powered
- Product Line:
- STI Wireless Chime Series
- Sound Options:
- 10 Selectable Sounds (except STI-3300/3331)
- Tamper Resistance:
- Weather-sealed Transmitters
- Transmitters per Receiver:
- Up to 10
- Warranty:
- One-Year Limited Warranty
- Applications:
- Home, Office, Store
- Compatible Devices:
- All STI transmitters and receivers work together
- Compatible Model:
- All STI transmitters and receivers work together
- Compatible Models:
- All STI transmitters and receivers work together
- Product Group:
- Safety
- Product Subgroup:
- Parts & Accessories
- Product Type:
- Wireless Chime Series – Doorbell, Entry Alert, Motion, and Extender Systems
- Department:
- Safety
Parts & Accessories
Safety Technology International STI-3300 – Frequently Asked Questions
How fast can I get the Safety Technology International STI-3300 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
continental
U.S.
Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Safety Technology International STI-3300 come with a warranty?
Absolutely. The Safety Technology International STI-3300 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Safety Technology International STI-3300?
You can call, text, or email our expert support team for fast answers. We’re here to help with
product
selection,
installation tips, and troubleshooting. Contact Us
Why buy the Safety Technology International STI-3300 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support,
and
rewards on
every order.
Our team is always ready to help you choose the right product for your project.