True loudness contour function
PANASONIC KX-TDA5451 This is a 4 channel additional SIP DSP Trunk (daughter) Card (SIP-DSP4) which cannot be used without the KX-TDA5450
The new model also comes with an illuminated keypad
10/12 step attenuation for high level audio signal
Sony UNI-OPL7C2 Outdoor Pressurized Pendant Mount Housing for SNC-RH124, RS44N, RS46N, RX-series, RZ25N. Clear Dome, Stock# UNI-OPL7C2 pump casing True loudness contour functionProduct features The Sony UNIOPL7C2 7" Pressurized Outdoor Dome Housing (Clear Bubble) offers excellent protection to the SNC series cameras from rain, snow, wind, dust, pollution, and insects. For maximum protection from the elements, this outdoor housing uses internal pressure produced by dry nitrogen to seal off even the smallest openings. The Schrader valve of the housing maintains the pressure in the housing, while the pressure relief valve helps