Call Us: 800-207-2259
The Contacta STS-K022 is a glass-mounted window intercom system with a UL 752 Level 3 ballistic-rated STS-BL3 customer-side unit, built for indoor high-security service counters where the customer side is behind bullet-resistant glass. It combines the same amplifier, staff unit, and hearing loop as Contacta's non-ballistic STS-K021 kit with a ballistic-rated all-in-one STS-BL3 speaker and microphone puck that mounts through a hole in the security glass. This is the kit for bank teller windows behind UL 752 rated glass, credit union cash counters, embassy visa windows, courthouse clerk stations, cash-transfer and armored-car counters, jewelry buy-back windows, prison and detention visitor windows, and any other service position where the barrier is specified as ballistic and the intercom hardware needs to match the security rating of the glass.
The complete kit includes a Contacta STS-BL3 UL 752 Level 3 rated customer-side speaker and microphone puck with the glass mounting kit, an STS-SU1-3W-SIL-400 Silver Sparkle finished staff unit with a 15.75-inch gooseneck microphone stem and a 5W speaker for the operator, an STS-A31H-BL8 window intercom amplifier, an IL-AE98 window-mounted hearing loop aerial for T-coil hearing aid users, and a PS-55 power supply.
Behind the scenes, the STS-BL3 customer unit runs 5 W RMS into 4 ohms with 85 dB SPL output at 1 watt / 1 meter across a 150 Hz to 10,300 Hz speech-tuned range on the speaker side, and an omnidirectional microphone with a 100 Hz to 10,000 Hz response tuned to pick up the customer's voice from any angle at the puck. The staff-side STS-SU1-3W speaker matches the customer-side speaker specs, so both sides of the conversation have the same audio character. The STS-A31H-BL8 amplifier precision-drives both sides with less than 5 percent total harmonic distortion. The full system is CE, RoHS, and WEEE compliant; the amplifier meets FCC Class B EMC emissions and ICES-003; the customer-side hardware is UL 752 Level 3 ballistic-rated.
FAQS:
Q: What does UL 752 Level 3 mean and what does it protect against?
A: UL 752 is Underwriters Laboratories' standard for ballistic-resistant materials, equipment, and armor. Level 3 within that standard specifies that the hardware is tested to stop three rounds of .44 Magnum lead semi-wadcutter gas checked ammunition fired from 15 feet. In practical terms, the STS-BL3 customer-side puck is engineered to survive that threat profile from the customer side of the glass, keeping the intercom operational during the same event the ballistic glass is protecting against. Match the intercom rating to your glass supplier's rating — if your barrier is UL 752 Level 3, this is the correct intercom pair for it. Call us at 800-207-2259 if you're not sure.
Q: When should I pick the STS-K022 over the non-ballistic STS-K021?
A: Pick the K022 if your glass is UL 752 Level 3 ballistic-rated, or if you're building a service window where the barrier is designed to stop small-arms fire and the intercom hardware needs to match. Pick the non-ballistic STS-K021 if your glass is standard security acrylic or laminated glass without a ballistic rating. The two kits share the same install pattern; the difference is the ballistic construction of the STS-BL3 customer puck versus the standard STS-BL0.
Q: What if I need a higher ballistic rating than Level 3?
A: Contacta manufactures the STS-K023 as the Level 8 ballistic-rated version of this same platform. UL 752 Level 8 addresses higher-threat rifle rounds and is specified for the most secure installations. If your glass supplier has specified UL 752 Level 8, the STS-K023 is the correct pair. Call us at 800-207-2259 for help matching the intercom rating to your barrier.
Q: How does the hearing loop work?
A: The included IL-AE98 aerial is a thin 8.5" x 8.5" panel that mounts on the window and broadcasts the intercom audio directly into T-coil equipped hearing aids in the immediate area, giving hearing-aid users a clean signal without ambient noise.
Q: How many components come in the kit?
A: The complete set includes the STS-A31H-BL8 window intercom amplifier, STS-SU1-3W-SIL-400 Silver Sparkle staff speaker and microphone unit, STS-BL3 UL 752 Level 3 ballistic-rated customer-side speaker and microphone puck with glass mounting kit, IL-AE98 window-mounted hearing loop aerial, and PS-55 power supply.
Q: Is installation more involved than the standard glass-mount kit?
A: The electronics are plug-and-play, same as the STS-K021. The ballistic-rated glass mount does require careful installation to preserve the barrier's rating, so plan for a glass installer familiar with ballistic-glass hole preparation and gasketing if the glass isn't already in place with a hole cut.
Features:
Applications:
The STS-K022 is designed for indoor service windows behind UL 752 Level 3 ballistic-rated glass with communication holes cut through the glass. Ideal for:
Technical Specifications:
System Components:
STS-A31H-BL8 Window Intercom Amplifier
STS-SU1-3W-SIL-400 Staff Unit Speaker & Microphone (Silver Sparkle, Gooseneck)
STS-BL3 UL 752 Level 3 Ballistic-Rated Customer-Side Speaker and Microphone with Glass Mounting Kit
IL-AE98 Window-Mounted Hearing Loop Aerial
PS-55 Power Supply
The Contacta STS-K022 is a glass-mounted window intercom system with a UL 752 Level 3 ballistic-rated STS-BL3 customer-side unit, built for indoor high-security service counters where the customer side is behind bullet-resistant glass. It combines the same amplifier, staff unit, and hearing loop as Contacta's non-ballistic STS-K021 kit with a ballistic-rated all-in-one STS-BL3 speaker and microphone puck that mounts through a hole in the security glass. This is the kit for bank teller windows behind UL 752 rated glass, credit union cash counters, embassy visa windows, courthouse clerk stations, cash-transfer and armored-car counters, jewelry buy-back windows, prison and detention visitor windows, and any other service position where the barrier is specified as ballistic and the intercom hardware needs to match the security rating of the glass.
The complete kit includes a Contacta STS-BL3 UL 752 Level 3 rated customer-side speaker and microphone puck with the glass mounting kit, an STS-SU1-3W-SIL-400 Silver Sparkle finished staff unit with a 15.75-inch gooseneck microphone stem and a 5W speaker for the operator, an STS-A31H-BL8 window intercom amplifier, an IL-AE98 window-mounted hearing loop aerial for T-coil hearing aid users, and a PS-55 power supply.
Behind the scenes, the STS-BL3 customer unit runs 5 W RMS into 4 ohms with 85 dB SPL output at 1 watt / 1 meter across a 150 Hz to 10,300 Hz speech-tuned range on the speaker side, and an omnidirectional microphone with a 100 Hz to 10,000 Hz response tuned to pick up the customer's voice from any angle at the puck. The staff-side STS-SU1-3W speaker matches the customer-side speaker specs, so both sides of the conversation have the same audio character. The STS-A31H-BL8 amplifier precision-drives both sides with less than 5 percent total harmonic distortion. The full system is CE, RoHS, and WEEE compliant; the amplifier meets FCC Class B EMC emissions and ICES-003; the customer-side hardware is UL 752 Level 3 ballistic-rated.
FAQS:
Q: What does UL 752 Level 3 mean and what does it protect against?
A: UL 752 is Underwriters Laboratories' standard for ballistic-resistant materials, equipment, and armor. Level 3 within that standard specifies that the hardware is tested to stop three rounds of .44 Magnum lead semi-wadcutter gas checked ammunition fired from 15 feet. In practical terms, the STS-BL3 customer-side puck is engineered to survive that threat profile from the customer side of the glass, keeping the intercom operational during the same event the ballistic glass is protecting against. Match the intercom rating to your glass supplier's rating — if your barrier is UL 752 Level 3, this is the correct intercom pair for it. Call us at 800-207-2259 if you're not sure.
Q: When should I pick the STS-K022 over the non-ballistic STS-K021?
A: Pick the K022 if your glass is UL 752 Level 3 ballistic-rated, or if you're building a service window where the barrier is designed to stop small-arms fire and the intercom hardware needs to match. Pick the non-ballistic STS-K021 if your glass is standard security acrylic or laminated glass without a ballistic rating. The two kits share the same install pattern; the difference is the ballistic construction of the STS-BL3 customer puck versus the standard STS-BL0.
Q: What if I need a higher ballistic rating than Level 3?
A: Contacta manufactures the STS-K023 as the Level 8 ballistic-rated version of this same platform. UL 752 Level 8 addresses higher-threat rifle rounds and is specified for the most secure installations. If your glass supplier has specified UL 752 Level 8, the STS-K023 is the correct pair. Call us at 800-207-2259 for help matching the intercom rating to your barrier.
Q: How does the hearing loop work?
A: The included IL-AE98 aerial is a thin 8.5" x 8.5" panel that mounts on the window and broadcasts the intercom audio directly into T-coil equipped hearing aids in the immediate area, giving hearing-aid users a clean signal without ambient noise.
Q: How many components come in the kit?
A: The complete set includes the STS-A31H-BL8 window intercom amplifier, STS-SU1-3W-SIL-400 Silver Sparkle staff speaker and microphone unit, STS-BL3 UL 752 Level 3 ballistic-rated customer-side speaker and microphone puck with glass mounting kit, IL-AE98 window-mounted hearing loop aerial, and PS-55 power supply.
Q: Is installation more involved than the standard glass-mount kit?
A: The electronics are plug-and-play, same as the STS-K021. The ballistic-rated glass mount does require careful installation to preserve the barrier's rating, so plan for a glass installer familiar with ballistic-glass hole preparation and gasketing if the glass isn't already in place with a hole cut.
Features:
Applications:
The STS-K022 is designed for indoor service windows behind UL 752 Level 3 ballistic-rated glass with communication holes cut through the glass. Ideal for:
Technical Specifications:
System Components:
STS-A31H-BL8 Window Intercom Amplifier
STS-SU1-3W-SIL-400 Staff Unit Speaker & Microphone (Silver Sparkle, Gooseneck)
STS-BL3 UL 752 Level 3 Ballistic-Rated Customer-Side Speaker and Microphone with Glass Mounting Kit
IL-AE98 Window-Mounted Hearing Loop Aerial
PS-55 Power Supply
