{"product_id":"contacta-sts-k022-ul-752-level-3-ballistic-glass-mounted-window-intercom-system","title":"Contacta STS-K022 UL 752 Level 3 Ballistic Glass-Mounted Window Intercom System","description":"\u003ccenter\u003e\u003cspan style=\"font-size: x-large;\"\u003e\u003cstrong\u003eContacta STS-K022 UL 752 Level 3 Ballistic Glass-Mounted Window Intercom System\u003c\/strong\u003e\u003c\/span\u003e\u003c\/center\u003e\u003ccenter\u003e\u003ciframe loading=\"lazy\" width=\"560\" height=\"315\" src=\"https:\/\/www.youtube-nocookie.com\/embed\/XrJVvepQbpQ\" title=\"Contacta STS-K021 Window Intercom System\"\u003e\u003c\/iframe\u003e\u003c\/center\u003e\n\u003cp\u003eThe 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.\u003c\/p\u003e\n\u003cp\u003eThe 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.\u003c\/p\u003e\n\u003cp\u003eBehind 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.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFAQS:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What does UL 752 Level 3 mean and what does it protect against?\u003c\/strong\u003e\u003cbr\u003eA: 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.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: When should I pick the STS-K022 over the non-ballistic STS-K021?\u003c\/strong\u003e\u003cbr\u003eA: 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 \u003ca href=\"https:\/\/www.safeandvaultstore.com\/products\/contacta-sts-k021-glass-mounted-window-intercom-system-with-all-in-one-speaker-and-microphone-unit\" rel=\"noopener\" target=\"_blank\"\u003eSTS-K021\u003c\/a\u003e 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.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What if I need a higher ballistic rating than Level 3?\u003c\/strong\u003e\u003cbr\u003eA: 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.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How does the hearing loop work?\u003c\/strong\u003e\u003cbr\u003eA: 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.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How many components come in the kit?\u003c\/strong\u003e\u003cbr\u003eA: 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.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is installation more involved than the standard glass-mount kit?\u003c\/strong\u003e\u003cbr\u003eA: 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.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eUL 752 Level 3 Ballistic-Rated Customer Unit - STS-BL3 all-in-one speaker and microphone puck engineered to survive three rounds of .44 Magnum from 15 feet\u003c\/li\u003e\n\u003cli\u003eAll-in-One Customer Unit - Combines speaker and microphone into a single Silver Sparkle-finished puck mounted through the glass, simplifying the install to one customer-side hole\u003c\/li\u003e\n\u003cli\u003eGooseneck Staff Microphone - 15.75\" flexible stem lets the operator position the microphone precisely for their workstation\u003c\/li\u003e\n\u003cli\u003eSilver Sparkle Finish - Powder-coated Silver Sparkle metalwork on both the staff unit and customer puck for a matched, upmarket install\u003c\/li\u003e\n\u003cli\u003eFull Duplex Communication - Simultaneous two-way audio with no push-to-talk delay\u003c\/li\u003e\n\u003cli\u003eHearing Loop Included - IL-AE98 window-mounted aerial for T-coil hearing aid users\u003c\/li\u003e\n\u003cli\u003eComplete System Kit - Comes with all major components:\n\u003cul\u003e\n\u003cli\u003eSTS-A31H-BL8 Window Intercom Amplifier\u003c\/li\u003e\n\u003cli\u003eSTS-SU1-3W-SIL-400 Staff Unit Speaker and Microphone (Silver Sparkle, 15.75\" gooseneck)\u003c\/li\u003e\n\u003cli\u003eSTS-BL3 UL 752 Level 3 Ballistic-Rated Customer-Side Speaker and Microphone with Glass Mounting Kit\u003c\/li\u003e\n\u003cli\u003eIL-AE98 Window-Mounted Hearing Loop Aerial\u003c\/li\u003e\n\u003cli\u003ePS-55 Power Supply\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eWide Frequency Response - Speakers cover 150 Hz to 10,300 Hz; customer microphone covers 100 Hz to 10,000 Hz; staff microphone covers 150 Hz to 10,500 Hz\u003c\/li\u003e\n\u003cli\u003eCompact Amplifier Unit - ABS plastic housing with membrane push-button power control\u003c\/li\u003e\n\u003cli\u003eStandards Compliant - CE, RoHS, WEEE compliant; FCC Class B EMC emissions; ICES-003; customer-side hardware UL 752 Level 3 ballistic-rated\u003c\/li\u003e\n\u003cli\u003eFlexible Power - PS-55 14V DC supply with efficient low-current operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eApplications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 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:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBank and Credit Union Teller Windows with Ballistic Glass\u003c\/li\u003e\n\u003cli\u003eEmbassy and Consular Service Windows\u003c\/li\u003e\n\u003cli\u003eCourthouse and Municipal Clerk Stations\u003c\/li\u003e\n\u003cli\u003eCash-Transfer, Armored-Car, and Vault Counters\u003c\/li\u003e\n\u003cli\u003eJewelry Buy-Back and Pawn Windows\u003c\/li\u003e\n\u003cli\u003eGovernment Identification and Licensing Counters\u003c\/li\u003e\n\u003cli\u003ePrison, Detention, and Secure-Facility Visitor Windows\u003c\/li\u003e\n\u003cli\u003eHigh-Security Reception and Access-Control Windows\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTechnical Specifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eModel: STS-K022 UL 752 Level 3 Ballistic Window Intercom System\u003c\/li\u003e\n\u003cli\u003eBallistic Rating: UL 752 Level 3 (customer-side speaker and microphone puck)\u003c\/li\u003e\n\u003cli\u003ePower Supply: PS-55 (Input 100-240 V, Output 14 V DC, 2.14 A, 30 W max)\u003c\/li\u003e\n\u003cli\u003eStandards: CE, RoHS, WEEE compliant; FCC Class B EMC emissions; ICES-003; UL 752 Level 3\u003c\/li\u003e\n\u003cli\u003eConstruction: Mixed materials, mild steel and SR500 steel customer unit, ABS plastic amplifier housing\u003c\/li\u003e\n\u003cli\u003eFinish: Powder-coated Silver Sparkle metalwork; matt black amplifier\u003c\/li\u003e\n\u003cli\u003eBoxed Dimensions: 5.90\" H x 20.40\" W x 12.50\" D\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSystem Components:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSTS-A31H-BL8 Window Intercom Amplifier\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSupply Voltage: 12-14 V DC\u003c\/li\u003e\n\u003cli\u003eQuiescent Current: 100 mA typical\u003c\/li\u003e\n\u003cli\u003eOperating Current: 2 A typical on speech peaks\u003c\/li\u003e\n\u003cli\u003eSpeaker Output Power: 2.5 W RMS @ 8 Ω \/ 4.4 W RMS @ 4 Ω\u003c\/li\u003e\n\u003cli\u003eLoop Drive: Constant current, bounded by 4 V RMS \u0026amp; 2 A RMS\u003c\/li\u003e\n\u003cli\u003eTotal Harmonic Distortion: \u0026lt;5% (loop + speakers)\u003c\/li\u003e\n\u003cli\u003eMicrophones: Electret, 5 V supply via 2.2K load resistor\u003c\/li\u003e\n\u003cli\u003ePower Switch: Push on\/push off tactile switch under membrane\u003c\/li\u003e\n\u003cli\u003eDimensions: 1.58\" H x 4.58\" W x 4.50\" D\u003c\/li\u003e\n\u003cli\u003eWeight: 0.32 Pounds\u003c\/li\u003e\n\u003cli\u003eHousing: ABS Plastic, Matt Black Fine Texture Finish\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSTS-SU1-3W-SIL-400 Staff Unit Speaker \u0026amp; Microphone (Silver Sparkle, Gooseneck)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSpeaker Output: 5 W RMS @ 4 Ω\u003c\/li\u003e\n\u003cli\u003eSound Pressure Level: 85 dB @ 1 W \/ 1 m\u003c\/li\u003e\n\u003cli\u003eSpeaker Frequency Response: 150 Hz - 10,300 Hz\u003c\/li\u003e\n\u003cli\u003eMicrophone Type: Cardioid directional electret\u003c\/li\u003e\n\u003cli\u003eMicrophone Sensitivity: 49.5 dB ± 2 dB @ 1 kHz (0 dB = 1 V\/Pa)\u003c\/li\u003e\n\u003cli\u003eMicrophone Impedance: 1.6 kΩ\u003c\/li\u003e\n\u003cli\u003eMicrophone Frequency Response: 150 Hz - 10,500 Hz\u003c\/li\u003e\n\u003cli\u003eOverall Height: 18.50\"\u003c\/li\u003e\n\u003cli\u003eMicrophone Gooseneck Stem Length: 15.75\"\u003c\/li\u003e\n\u003cli\u003eBase Width x Depth: 3.80\" W x 6.02\" D\u003c\/li\u003e\n\u003cli\u003eWeight: 1.79 Pounds\u003c\/li\u003e\n\u003cli\u003eConstruction: Mild steel, powder-coated Silver Sparkle finish\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSTS-BL3 UL 752 Level 3 Ballistic-Rated Customer-Side Speaker and Microphone with Glass Mounting Kit\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBallistic Rating: UL 752 Level 3 (stops three rounds of .44 Magnum from 15 feet)\u003c\/li\u003e\n\u003cli\u003eSpeaker Output: 5 W RMS\u003c\/li\u003e\n\u003cli\u003eSpeaker Impedance: 4 Ω\u003c\/li\u003e\n\u003cli\u003eSound Pressure Level: 85 dB @ 1 W \/ 1 m\u003c\/li\u003e\n\u003cli\u003eSpeaker Frequency Response: 150 Hz - 10,300 Hz\u003c\/li\u003e\n\u003cli\u003eMicrophone Directional Response: Omnidirectional\u003c\/li\u003e\n\u003cli\u003eMicrophone Sensitivity: -44 dB ± 3 dB @ 1 kHz (0 dB = 1 V\/Pa)\u003c\/li\u003e\n\u003cli\u003eMicrophone Impedance: 1.0 kΩ ± 30%\u003c\/li\u003e\n\u003cli\u003eMicrophone Frequency Response: 100 Hz - 10,000 Hz\u003c\/li\u003e\n\u003cli\u003eDimensions: 5.51\" diameter x 4.84\" depth\u003c\/li\u003e\n\u003cli\u003eConstruction: Mixed materials, mild steel and SR500 steel\u003c\/li\u003e\n\u003cli\u003eFinish: Powder-coated Silver Sparkle\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eIL-AE98 Window-Mounted Hearing Loop Aerial\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDimensions: 8.50\" H x 8.50\" W x 0.01\" D\u003c\/li\u003e\n\u003cli\u003eWeight: 0.26 Pounds\u003c\/li\u003e\n\u003cli\u003eConnection Cable Length: 6.5 ft\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003ePS-55 Power Supply\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInput: 100-240 V AC, 50-60 Hz, 1 A max\u003c\/li\u003e\n\u003cli\u003eOutput: 14 V DC, 2.14 A, 30 W max\u003c\/li\u003e\n\u003cli\u003eCable Length: 70.87\"\u003c\/li\u003e\n\u003cli\u003eDimensions: 1.38\" H x 2.08\" W x 3.92\" D\u003c\/li\u003e\n\u003cli\u003eWeight: 0.51 Pounds\u003c\/li\u003e\n\u003cli\u003eConstruction: ABS Plastic, Black Finish\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Contacta Inc","offers":[{"title":"Default Title","offer_id":41643549229114,"sku":"STS-K022","price":2295.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1147\/6518\/files\/K023-kit-AV.png?v=1789026433","url":"https:\/\/www.safeandvaultstore.com\/products\/contacta-sts-k022-ul-752-level-3-ballistic-glass-mounted-window-intercom-system","provider":"Safe and Vault Store.com","version":"1.0","type":"link"}