{"product_id":"contacta-sts-k058-window-intercom-system-with-glass-mounted-curved-microphone-and-surface-speaker","title":"Contacta STS-K058 Window Intercom System with Glass-Mounted Curved Microphone and Surface Speaker","description":"\u003ccenter\u003e\u003cspan style=\"font-size: x-large;\"\u003e\u003cstrong\u003eContacta STS-K058 Window Intercom System with Glass-Mounted Curved Microphone and Surface Speaker\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\/7Jn7AZKruT4\" title=\"Contacta STS-K058 Window Intercom System\"\u003e\u003c\/iframe\u003e\u003c\/center\u003e\n\u003cp\u003eThe Contacta STS-K058 is an indoor window intercom system built around a two-part customer-side setup: a discreet, surface-mounted speaker and a distinctive glass-mounted microphone that uses curved tubing to route the pickup element above the counter. Instead of combining the speaker and microphone into one all-in-one puck or bar, the K058 separates them so each component can be positioned independently for the best acoustic result. The speaker sits low on the counter near the customer's ear; the microphone extends above counter level on a curved boom that arcs cleanly across the glass, keeping the pickup close to the customer's mouth without obstructing sightlines or taking up counter space.\u003c\/p\u003e\n\u003cp\u003eThe complete kit includes a Contacta STS-M14-BENT customer glass-mounted microphone with curved tubing, an STS-S60 customer surface-mounted speaker, an STS-SU1-3W staff unit combining a cardioid microphone with dual-mute controls and a 5W speaker for the operator, an STS-A31H window intercom amplifier, an IL-AE99 under-counter hearing loop aerial (molded on site to the required size by your installer), and a PS-55 power supply. \u003c\/p\u003e\n\u003cp\u003eBehind the scenes, the STS-S60 customer speaker 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. The STS-M14-BENT customer microphone is a cardioid aluminum electret with a wider 70 Hz to 10,300 Hz frequency response tuned to capture the customer's voice at close range from the curved boom position. The staff-side STS-SU1-3W matches the customer speaker's frequency response and delivers 5W output. The STS-A31H amplifier precision-drives both sides with less than 5 percent total harmonic distortion. The system is CE, RoHS, and WEEE compliant, and the hearing loop is certified to BS EN 60118-4 when installed correctly.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFAQS:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the curved-tubing microphone and why choose it?\u003c\/strong\u003e\u003cbr\u003eA: The STS-M14-BENT is a cardioid microphone element mounted on a curved aluminum tubing arm that routes the pickup up and over from a base on the customer side. Instead of a straight vertical stem or a low-profile puck, the bent tubing lets the microphone extend across the counter and stay close to the customer's mouth at a natural speaking height. The result is a cleaner acoustic pickup than a fixed low-position microphone would give, without needing a tall stem sitting straight up on the counter.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How is this different from the STS-K035 half-bridge bar kit?\u003c\/strong\u003e\u003cbr\u003eA: The \u003ca href=\"https:\/\/www.safeandvaultstore.com\/products\/contacta-sts-k035-window-intercom-system-with-half-bridge-bar-microphone-and-hearing-loop\" rel=\"noopener\" target=\"_blank\"\u003eK035\u003c\/a\u003e combines the customer speaker and microphone into a single half-bridge bar unit at the counter. The K058 separates them: a discrete surface-mounted speaker (STS-S60) sits at counter level near the customer's ear, and a curved-tubing microphone (STS-M14-BENT) mounts to the glass with the pickup element arcing across on a bent boom. Choose the K058 when you want to position each component independently for the best acoustic placement, or when the counter geometry doesn't support the half-bridge bar's fixed footprint.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How is this different from the STS-K020-S23 glass-mount kit?\u003c\/strong\u003e\u003cbr\u003eA: The \u003ca href=\"https:\/\/www.safeandvaultstore.com\/products\/contacta-sts-k020-s23-glass-mounted-window-intercom-system-with-overhead-speaker\" rel=\"noopener\" target=\"_blank\"\u003eK020-S23\u003c\/a\u003e uses an overhead-mounted STS-S23 speaker above the glass plus an STS-C100 stem microphone at the counter, and requires a pre-cut communication hole in the glass for the customer microphone unit. The K058 uses a lower-profile surface-mount speaker (STS-S60) and the curved-tubing glass-mount microphone (STS-M14-BENT). Choose the K058 for a lower visual profile and a curved-tubing microphone aesthetic; choose the K020-S23 when the glass already has a communication hole, and you want the higher overhead speaker projection.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How does the hearing loop work?\u003c\/strong\u003e\u003cbr\u003eA: The included IL-AE99 aerial is a copper-wire loop with PVC casing that mounts under the counter. The installer molds it to the required size on site, then connects it to the intercom amplifier. Once installed correctly, it meets BS EN 60118-4, the international standard for hearing loop performance, and broadcasts intercom audio directly to T-coil-equipped hearing aids in the immediate area.\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 amplifier, STS-SU1-3W staff speaker and microphone unit with dual mute, STS-S60 surface-mounted customer speaker, STS-M14-BENT glass-mounted customer microphone with curved tubing, IL-AE99 under-counter hearing loop aerial, and PS-55 power supply.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is installation complicated?\u003c\/strong\u003e\u003cbr\u003eA: The electronics are plug-and-play, but the customer speaker mounts permanently on the counter, the microphone base mounts to the glass, the hearing loop aerial has to be routed and molded under the counter, and cabling has to be run between the staff and customer sides. Plan for a professional installer if you're not comfortable working with glass hardware, running low-voltage cable through service counters, or shaping copper-wire loop aerials.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSeparate Customer Speaker and Microphone - Independent placement lets you optimize acoustic position for each side of the conversation\u003c\/li\u003e\n\u003cli\u003eCurved-Tubing Glass-Mount Microphone - STS-M14-BENT microphone element on a bent aluminum boom that arcs across the counter for close-range voice pickup\u003c\/li\u003e\n\u003cli\u003eSurface-Mount Customer Speaker - STS-S60 discrete counter-height speaker positioned near the customer's ear\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eDual-Mute Staff Unit - Cardioid microphone with mute function for operator privacy\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-AE99 under-counter aerial molded on site, meets BS EN 60118-4 when installed correctly\u003c\/li\u003e\n\u003cli\u003eComplete System Kit - Comes with all major components:\n\u003cul\u003e\n\u003cli\u003eSTS-A31H Window Intercom Amplifier\u003c\/li\u003e\n\u003cli\u003eSTS-SU1-3W Staff Unit Speaker and Microphone (Dual Mute)\u003c\/li\u003e\n\u003cli\u003eSTS-S60 Customer Surface-Mounted Speaker\u003c\/li\u003e\n\u003cli\u003eSTS-M14-BENT Customer Glass-Mounted Microphone with Curved Tubing\u003c\/li\u003e\n\u003cli\u003eIL-AE99 Under-Counter 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 70 Hz to 10,300 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, and WEEE compliant; hearing loop meets BS EN 60118-4 in correct installations\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-K058 is designed for indoor service windows and counters where the buyer wants a curved-tubing glass-mount microphone paired with a discrete surface-mount speaker. Ideal for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBank and Credit Union Teller Windows\u003c\/li\u003e\n\u003cli\u003ePost Offices and Shipping Counters\u003c\/li\u003e\n\u003cli\u003eTheater and Box Office Ticket Windows\u003c\/li\u003e\n\u003cli\u003eInformation Desks and Visitor Centers\u003c\/li\u003e\n\u003cli\u003ePublic Transit Fare Booths\u003c\/li\u003e\n\u003cli\u003eEmbassies and Consular Service Windows\u003c\/li\u003e\n\u003cli\u003eGovernment Buildings and Municipal Service Counters\u003c\/li\u003e\n\u003cli\u003eReception and Concierge Counters in Hotels and Corporate Lobbies\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-K058 Window Intercom System with Glass-Mount Microphone and Surface Speaker\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; BS EN 60118-4 (hearing loop, in correct installations)\u003c\/li\u003e\n\u003cli\u003eConstruction: Mild Steel metalwork, ABS plastic amplifier housing, aluminum microphone tubing\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eBoxed Dimensions: 6.30\" H x 11.81\" W x 12.20\" D\u003c\/li\u003e\n\u003cli\u003eBoxed Weight: 5.51 Pounds\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 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; 3 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 Staff Unit Speaker \u0026amp; Microphone (Dual Mute)\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\u003eDimensions: 2.61\" H (base), 14.50\" H (extended), 3.80\" W x 6.02\" D\u003c\/li\u003e\n\u003cli\u003eWeight: 1.79 Pounds\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eConstruction: Mild Steel\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSTS-S60 Customer Surface-Mounted Speaker\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\u003eDimensions: 4.26\" H x 2.37\" W x 2.93\" D\u003c\/li\u003e\n\u003cli\u003eWeight: 1.23 Pounds\u003c\/li\u003e\n\u003cli\u003eConstruction: Mild Steel\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSTS-M14-BENT Customer Glass-Mounted Microphone with Curved Tubing\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDirectional Response: Cardioid\u003c\/li\u003e\n\u003cli\u003eSensitivity: -47 ± 3 dB @ 1 kHz\u003c\/li\u003e\n\u003cli\u003eImpedance: 680 Ω @ 1 kHz\u003c\/li\u003e\n\u003cli\u003eFrequency Response: 70 Hz - 10,300 Hz\u003c\/li\u003e\n\u003cli\u003eMicrophone Dimensions: 1.18\" diameter x 1.08\" depth\u003c\/li\u003e\n\u003cli\u003eTubing Height: 12.99\"\u003c\/li\u003e\n\u003cli\u003eTubing Width: 7.87\"\u003c\/li\u003e\n\u003cli\u003eWeight: 0.35 Pounds\u003c\/li\u003e\n\u003cli\u003eMicrophone Construction: Aluminum, Silver Anodized Finish\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eIL-AE99 Under-Counter Hearing Loop Aerial\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eConstruction: Copper wire with PVC casing\u003c\/li\u003e\n\u003cli\u003eFinish: Black\u003c\/li\u003e\n\u003cli\u003eDimensions: Molded on site to required size by installer\u003c\/li\u003e\n\u003cli\u003eWeight: 0.19 Pounds\u003c\/li\u003e\n\u003cli\u003eStandard: BS EN 60118-4 compliant when installed correctly\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":41654889873466,"sku":"STS-K058","price":1372.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1147\/6518\/files\/STS-K058-1.jpg?v=1789494451","url":"https:\/\/www.safeandvaultstore.com\/products\/contacta-sts-k058-window-intercom-system-with-glass-mounted-curved-microphone-and-surface-speaker","provider":"Safe and Vault Store.com","version":"1.0","type":"link"}