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The Contacta STS-M15-300-IP is the IP54 weather-rated stem microphone built for the customer side of an outdoor window intercom installation where the hardware is exposed to rain, wind-driven precipitation, dust, and dirt. The microphone element sits on top of a straight 11.8-inch stem in black powder-coated ABS plastic and stainless steel, mounted to the exterior wall or window frame so the pickup head sits at mouth height for the customer on the outdoor side. The 6.56-foot cable routes back through the wall to the amplifier and staff unit on the interior side. Hardware and adhesive pads for installation are included.
IP54 rating means the enclosure is protected against dust ingress and water splashing from any direction. In practical terms, that covers drive-through pickup windows, curbside pharmacy or health-clinic counters, ticket booths and ferry terminals, outdoor gates and security doors, transportation and distribution depot check-in windows, and the drive-through and outdoor mass-testing stations that became common in healthcare operations. A standard indoor stem microphone will degrade quickly in those environments as moisture reaches the microphone element and the ABS joints; the STS-M15-300-IP is specifically rated for permanent exterior exposure.
The microphone uses an omnidirectional pickup pattern rather than the cardioid pattern on Contacta's indoor stem microphones. For outdoor service windows and drive-through counters, the customer is not always positioned directly in front of the microphone (different vehicle heights at a drive-through, customers standing at an angle to a window ledge, children or wheelchair users at a different height than the designed mouth position), so an omnidirectional pattern picks up the customer's voice from any angle at the counter. The trade-off is slightly more ambient noise pickup than a cardioid pattern, which is a reasonable trade-off in open outdoor acoustics where there is less reverb and less constant background noise than a crowded indoor lobby.
Technical specs: omnidirectional directional response, -42 ±3 dB sensitivity (0 dB = 1 V/Pa), 2.2 kΩ impedance, 100 Hz to 20,000 Hz frequency response. The 2.2 kΩ impedance is matched to the electret microphone input stage of Contacta's STS-A31H window intercom amplifier, which supplies 5 V through a 2.2 kΩ load resistor to drive the microphone, and the microphone is powered by the PS-55 power supply, the same amplifier and power supply used across Contacta's window intercom family.
The STS-M15-300-IP is the customer-side microphone component in the Contacta STS-K080-IP IP54 Outdoor Window Intercom System. If you are running that kit and the outdoor microphone has been damaged by weather, impact, or vandalism and needs replacement, this is the correct replacement part.
If your installation is indoor rather than outdoor, Contacta's indoor-rated stem microphones use a cardioid pickup pattern (better ambient-noise rejection in reverberant lobby environments) at a lower price. The Contacta STS-M14-300 is the indoor anti-vandal cardioid microphone with the same 11.8-inch stem length for installations where weather exposure is not a concern.
If you're not sure whether the STS-M15-300-IP is the right outdoor microphone for your installation, please call us at 800-207-2259.
Features:
Applications:
Physical Data:
Technical Data:
The Contacta STS-M15-300-IP is the IP54 weather-rated stem microphone built for the customer side of an outdoor window intercom installation where the hardware is exposed to rain, wind-driven precipitation, dust, and dirt. The microphone element sits on top of a straight 11.8-inch stem in black powder-coated ABS plastic and stainless steel, mounted to the exterior wall or window frame so the pickup head sits at mouth height for the customer on the outdoor side. The 6.56-foot cable routes back through the wall to the amplifier and staff unit on the interior side. Hardware and adhesive pads for installation are included.
IP54 rating means the enclosure is protected against dust ingress and water splashing from any direction. In practical terms, that covers drive-through pickup windows, curbside pharmacy or health-clinic counters, ticket booths and ferry terminals, outdoor gates and security doors, transportation and distribution depot check-in windows, and the drive-through and outdoor mass-testing stations that became common in healthcare operations. A standard indoor stem microphone will degrade quickly in those environments as moisture reaches the microphone element and the ABS joints; the STS-M15-300-IP is specifically rated for permanent exterior exposure.
The microphone uses an omnidirectional pickup pattern rather than the cardioid pattern on Contacta's indoor stem microphones. For outdoor service windows and drive-through counters, the customer is not always positioned directly in front of the microphone (different vehicle heights at a drive-through, customers standing at an angle to a window ledge, children or wheelchair users at a different height than the designed mouth position), so an omnidirectional pattern picks up the customer's voice from any angle at the counter. The trade-off is slightly more ambient noise pickup than a cardioid pattern, which is a reasonable trade-off in open outdoor acoustics where there is less reverb and less constant background noise than a crowded indoor lobby.
Technical specs: omnidirectional directional response, -42 ±3 dB sensitivity (0 dB = 1 V/Pa), 2.2 kΩ impedance, 100 Hz to 20,000 Hz frequency response. The 2.2 kΩ impedance is matched to the electret microphone input stage of Contacta's STS-A31H window intercom amplifier, which supplies 5 V through a 2.2 kΩ load resistor to drive the microphone, and the microphone is powered by the PS-55 power supply, the same amplifier and power supply used across Contacta's window intercom family.
The STS-M15-300-IP is the customer-side microphone component in the Contacta STS-K080-IP IP54 Outdoor Window Intercom System. If you are running that kit and the outdoor microphone has been damaged by weather, impact, or vandalism and needs replacement, this is the correct replacement part.
If your installation is indoor rather than outdoor, Contacta's indoor-rated stem microphones use a cardioid pickup pattern (better ambient-noise rejection in reverberant lobby environments) at a lower price. The Contacta STS-M14-300 is the indoor anti-vandal cardioid microphone with the same 11.8-inch stem length for installations where weather exposure is not a concern.
If you're not sure whether the STS-M15-300-IP is the right outdoor microphone for your installation, please call us at 800-207-2259.
Features:
Applications:
Physical Data:
Technical Data:
