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The Contacta STS-K020-S23 Window Intercom System is built for indoor service counters where the customer side has security glass with a pre-cut communication hole. Instead of routing audio through a counter-mounted pod, the customer speaks directly into a microphone mounted right on the glass, so nothing sits between them and the staff member on the other side. It's the standard setup for bank teller windows, pharmacy counters with acrylic partitions, transit fare booths, ticket windows, government service counters, and any indoor service position that was designed with a hole through the glass from the start.
The complete kit includes everything you need for a permanent glass-mounted install: a Contacta STS-C100 customer-side microphone with the glass mounting kit (fits holes between 2.5" and 4.0" in diameter), an STS-S23 overhead speaker with mounting bracket that projects clear speech down to the customer at the counter, an STS-SU1-3W-G grey staff unit combining a cardioid microphone with mute and a 5W speaker for the operator, a high-performance STS-A31H 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-S23 overhead speaker and STS-SU1-3W staff unit both run 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. The STS-C100 customer microphone is a cardioid aluminum electret with a wider 70 Hz to 10,300 Hz response tuned to pick up the customer's voice at close range through the glass mount. The full system is CE, RoHS, and WEEE compliant, and the hearing loop is certified to BS EN 60118-4 when installed correctly.
FAQS:
Q: What kind of installation is this kit designed for?
A: The STS-K020-S23 is designed for indoor service windows where the security glass or acrylic partition has a pre-cut communication hole between 2.5" and 4.0" in diameter. The customer microphone mounts directly on the glass over the hole, so the customer's voice reaches the microphone cleanly without having to route through a counter-mounted speaker pod. Typical installs are bank teller windows, pharmacy consultation counters with barrier glass, transit fare booths, ticket windows, and government service counters.
Q: My glass hole is bigger than 4 inches, will this kit work?
A: No, the STS-C100 mounting plate included with this kit is sized for holes between 2.5" and 4.0". For holes between 4.0" and 5.0", you'll need Contacta's STS-C200 customer unit instead of the STS-C100. If you're not sure what size hole you have or which kit fits, call us at 800-207-2259, and we'll help you pick the right one.
Q: How is this different from the STS-K002 or K003 counter-mount kits?
A: The K002 and K003 kits are designed for installations where the customer-side hardware sits on the counter next to or in front of the glass, not through it. Use those when you don't have (or don't want) a hole in the glass. Use the STS-K020-S23 when the glass was designed with a communication hole from the start and the customer speaks directly through it, audio quality is cleaner because there's no glass barrier between the customer's voice and the microphone.
Q: What if I don't have a hole in my glass yet?
A: The kit doesn't include glass drilling. If your partition doesn't have a hole yet, plan for a glass installer to core one at 2.5" to 4.0" diameter before running the intercom installation. Tempered or laminated security glass generally needs to be re-cut or replaced rather than drilled after the fact, so confirm with your glass supplier before ordering.
Q: How does the hearing loop work?
A: The included IL-AE98 aerial is a thin (0.10" deep) 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. It meets BS EN 60118-4 when installed to spec, which is the international standard for hearing loop performance.
Q: How many components come in the kit?
A: The complete set includes the STS-A31H amplifier, STS-SU1-3W-G grey staff speaker and microphone unit with dual mute, STS-C100 customer-side microphone with glass mounting kit and hardware, STS-S23 overhead speaker with mounting bracket, IL-AE98 window-mounted hearing loop aerial, and PS-55 power supply.
Q: Is installation complicated?
A: The electronics are plug-and-play, but the glass mount and the overhead speaker require permanent mounting and cable routing back to the amplifier. Plan for a professional installer if you're not comfortable working with security glass hardware, drilling for the overhead speaker bracket, or running low-voltage cable through a service counter.
Features:
Applications:
The STS-K020-S23 Glass-Mounted Window Intercom System is designed for indoor service windows with communication holes cut through the glass. Ideal for:
Technical Specifications:
System Components:
STS-A31H Window Intercom Amplifier
STS-SU1-3W-G Staff Unit Speaker & Microphone (Dual Mute, Grey)
STS-S23 Overhead Speaker
STS-C100 Customer-Side Microphone with Glass Mounting Kit
IL-AE98 Window-Mounted Hearing Loop Aerial
PS-55 Power Supply
The Contacta STS-K020-S23 Window Intercom System is built for indoor service counters where the customer side has security glass with a pre-cut communication hole. Instead of routing audio through a counter-mounted pod, the customer speaks directly into a microphone mounted right on the glass, so nothing sits between them and the staff member on the other side. It's the standard setup for bank teller windows, pharmacy counters with acrylic partitions, transit fare booths, ticket windows, government service counters, and any indoor service position that was designed with a hole through the glass from the start.
The complete kit includes everything you need for a permanent glass-mounted install: a Contacta STS-C100 customer-side microphone with the glass mounting kit (fits holes between 2.5" and 4.0" in diameter), an STS-S23 overhead speaker with mounting bracket that projects clear speech down to the customer at the counter, an STS-SU1-3W-G grey staff unit combining a cardioid microphone with mute and a 5W speaker for the operator, a high-performance STS-A31H 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-S23 overhead speaker and STS-SU1-3W staff unit both run 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. The STS-C100 customer microphone is a cardioid aluminum electret with a wider 70 Hz to 10,300 Hz response tuned to pick up the customer's voice at close range through the glass mount. The full system is CE, RoHS, and WEEE compliant, and the hearing loop is certified to BS EN 60118-4 when installed correctly.
FAQS:
Q: What kind of installation is this kit designed for?
A: The STS-K020-S23 is designed for indoor service windows where the security glass or acrylic partition has a pre-cut communication hole between 2.5" and 4.0" in diameter. The customer microphone mounts directly on the glass over the hole, so the customer's voice reaches the microphone cleanly without having to route through a counter-mounted speaker pod. Typical installs are bank teller windows, pharmacy consultation counters with barrier glass, transit fare booths, ticket windows, and government service counters.
Q: My glass hole is bigger than 4 inches, will this kit work?
A: No, the STS-C100 mounting plate included with this kit is sized for holes between 2.5" and 4.0". For holes between 4.0" and 5.0", you'll need Contacta's STS-C200 customer unit instead of the STS-C100. If you're not sure what size hole you have or which kit fits, call us at 800-207-2259, and we'll help you pick the right one.
Q: How is this different from the STS-K002 or K003 counter-mount kits?
A: The K002 and K003 kits are designed for installations where the customer-side hardware sits on the counter next to or in front of the glass, not through it. Use those when you don't have (or don't want) a hole in the glass. Use the STS-K020-S23 when the glass was designed with a communication hole from the start and the customer speaks directly through it, audio quality is cleaner because there's no glass barrier between the customer's voice and the microphone.
Q: What if I don't have a hole in my glass yet?
A: The kit doesn't include glass drilling. If your partition doesn't have a hole yet, plan for a glass installer to core one at 2.5" to 4.0" diameter before running the intercom installation. Tempered or laminated security glass generally needs to be re-cut or replaced rather than drilled after the fact, so confirm with your glass supplier before ordering.
Q: How does the hearing loop work?
A: The included IL-AE98 aerial is a thin (0.10" deep) 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. It meets BS EN 60118-4 when installed to spec, which is the international standard for hearing loop performance.
Q: How many components come in the kit?
A: The complete set includes the STS-A31H amplifier, STS-SU1-3W-G grey staff speaker and microphone unit with dual mute, STS-C100 customer-side microphone with glass mounting kit and hardware, STS-S23 overhead speaker with mounting bracket, IL-AE98 window-mounted hearing loop aerial, and PS-55 power supply.
Q: Is installation complicated?
A: The electronics are plug-and-play, but the glass mount and the overhead speaker require permanent mounting and cable routing back to the amplifier. Plan for a professional installer if you're not comfortable working with security glass hardware, drilling for the overhead speaker bracket, or running low-voltage cable through a service counter.
Features:
Applications:
The STS-K020-S23 Glass-Mounted Window Intercom System is designed for indoor service windows with communication holes cut through the glass. Ideal for:
Technical Specifications:
System Components:
STS-A31H Window Intercom Amplifier
STS-SU1-3W-G Staff Unit Speaker & Microphone (Dual Mute, Grey)
STS-S23 Overhead Speaker
STS-C100 Customer-Side Microphone with Glass Mounting Kit
IL-AE98 Window-Mounted Hearing Loop Aerial
PS-55 Power Supply
