{"product_id":"contacta-sts-k023-ul-752-level-8-ballistic-glass-mounted-window-intercom-system","title":"Contacta STS-K023 UL 752 Level 8 Ballistic Glass-Mounted Window Intercom System","description":"\u003ccenter\u003e\u003cspan style=\"font-size: x-large;\"\u003e\u003cstrong\u003eContacta STS-K023 UL 752 Level 8 Ballistic Glass-Mounted Window Intercom System\u003c\/strong\u003e\u003c\/span\u003e\u003c\/center\u003e\n\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-K023 is a glass-mounted window intercom system with a UL 752 Level 8 ballistic-rated STS-BL8 customer-side unit, built for the highest-security indoor service counters where the customer side is behind rifle-rated bullet-resistant glass. Level 8 is the top of Contacta's UL 752 ballistic ladder and is engineered to survive rifle-caliber threats, not just handgun rounds. This is the kit for military and federal building visitor windows, embassy consular sections at high-threat posts, courthouse and federal marshal service windows in high-security jurisdictions, maximum-security correctional facility visitor stations, cash-transfer and armored-car counters with rifle-rated glass, nuclear regulatory and defense contractor reception windows, and any other service position where the barrier is specified as UL 752 Level 8 and the intercom hardware needs to match the rating of the glass.\u003c\/p\u003e\n\u003cp\u003eThe complete kit includes a Contacta STS-BL8 UL 752 Level 8 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-BL8 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 8 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 8 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 8 within that standard specifies that the hardware is tested to stop five rounds of 7.62mm NATO M80 rifle ball ammunition (roughly equivalent to .308 Winchester) fired from 15 feet at approximately 2,750 feet per second. This is a rifle-caliber threat model, several tiers above the handgun-rated Levels 1 through 4, and is the specification typically required for military installations, federal facilities in high-threat postings, and maximum-security correctional visitor stations. The STS-BL8 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. Call us at 800-207-2259 if you need help matching the intercom rating to a specific installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: When should I pick the STS-K023 over the Level 3 STS-K022 or the non-ballistic STS-K021?\u003c\/strong\u003e\u003cbr\u003eA: Pick the K023 if your glass supplier has specified UL 752 Level 8 or if your installation's threat model includes rifle-caliber small-arms fire. Pick the \u003ca href=\"https:\/\/www.safeandvaultstore.com\/products\/contacta-sts-k022-ul-752-level-3-ballistic-glass-mounted-window-intercom-system\" rel=\"noopener\" target=\"_blank\"\u003eSTS-K022\u003c\/a\u003e if your glass is UL 752 Level 3 and the threat model is limited to handgun rounds. 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 the glass is standard security acrylic or laminated glass without any ballistic rating. Match the intercom's ballistic rating to the barrier the glass supplier specified.\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-BL8 UL 752 Level 8 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 lower-rated glass-mount kits?\u003c\/strong\u003e\u003cbr\u003eA: The electronics are plug-and-play, same as the K021 and K022. The Level 8 ballistic-rated glass mount does require careful installation to preserve the barrier's rating, and Level 8 barriers are typically thicker and heavier than Level 3, so plan for a glass installer experienced with rifle-rated ballistic-glass hole preparation, gasketing, and load-bearing hardware 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 8 Ballistic-Rated Customer Unit - STS-BL8 all-in-one speaker and microphone puck engineered to survive five rounds of 7.62mm NATO rifle ball ammunition from 15 feet\u003c\/li\u003e\n\u003cli\u003eHighest UL 752 Rating in the Contacta Line - Level 8 addresses rifle-caliber threats, several tiers above the handgun-rated Levels 1 through 4\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-BL8 UL 752 Level 8 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 8 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-K023 is designed for indoor service windows behind UL 752 Level 8 rifle-rated ballistic glass. Ideal for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMilitary Base and Installation Visitor Windows\u003c\/li\u003e\n\u003cli\u003eFederal Building and Courthouse Reception in High-Security Jurisdictions\u003c\/li\u003e\n\u003cli\u003eEmbassy and Consular Service Windows at High-Threat Posts\u003c\/li\u003e\n\u003cli\u003eFederal Marshal Service and Law Enforcement Reception\u003c\/li\u003e\n\u003cli\u003eMaximum-Security Correctional Facility Visitor Stations\u003c\/li\u003e\n\u003cli\u003eNuclear Regulatory and Defense Contractor Reception Windows\u003c\/li\u003e\n\u003cli\u003eCash-Transfer and Armored-Car Counters with Rifle-Rated Glass\u003c\/li\u003e\n\u003cli\u003eHigh-Value Asset and Precious-Metals Vault Counters\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-K023 UL 752 Level 8 Ballistic Window Intercom System\u003c\/li\u003e\n\u003cli\u003eBallistic Rating: UL 752 Level 8 (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 8\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-BL8 UL 752 Level 8 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 8 (stops five rounds of 7.62mm NATO M80 rifle ball from 15 feet at approximately 2,750 fps)\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: Mixed materials, ABS Plastic Case, Black Finish\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Contacta Inc","offers":[{"title":"Default Title","offer_id":41644890193978,"sku":"STS-K023","price":2590.0,"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-k023-ul-752-level-8-ballistic-glass-mounted-window-intercom-system","provider":"Safe and Vault Store.com","version":"1.0","type":"link"}