[. . . ] [. . . ] An IR transmitter and receiver pair (mounted next to the microphone element) detects the door position for muting and unmuting (patent pending). But don't rest your soda pop on the open door, since this might stain the included prayer card (intended to mount on the open door). The RM 1 ships with a mounting template to assist installers with the drilling of mounting pilot holes. A single male XLR connector on the RM 1's rear requires 11-52 volts (at 10 milliamps) phantom power to operate the door-activated muting circuit and power the condenser microphone. Features · · · · · · Directional Cardioid Condenser Microphone XLR Connection Vertical Mount Enclosure Auto-Muting IR Door Detection Prayer Card Included Mounting Template Included Data Sheet- RM 1 SACRAMENT MICROPHONE Connection (back of unit) 2. 75" TOP RM 1 MOUNTING TEMPLATE 3. 8" 1. 5" (not actual size ­ refer to template included with RM 1) 9. 27" 9. 25" . 15" . 43" 2. 75" 1" diameter hole . 45" 0" . 15" Features & Specifications Parameter Microphone: Type . . . . . . . . . . Frequency Response . . . . . . . . . . Output Impedance . . . . . . . . . . Sensitivity . . . . . . . . . . Phantom Power: Voltage . . . . . . . . . . . . . . . Current Draw . . . . . . . . . . Self Noise . . . . . . . . . . Max SPL . . . . . . . . . . Polarity . . . . . . . . . . Dynamic Range Turn On / Off Angle Unit: Construction . . . . . . . . . . Size . . . . . . . . . . Weight Specification Condenser 100 - 10k 310 -63 11 to 52 10 <45 116 Limit typ typ typ typ typ typ typ Units Hz dBV VDC mA dB dB 1 kHz, 10% THD 4 k Degrees from vertical (7. 9 cm x 24. 4 cm x 4. 3 cm) (. 45 kg) 1 kHz 0. 71 mV/Pa Positive on pin 2 & 3 Conditions/Comments Positive diaphragm pressure produces positive voltage 81 typ dB 40° typ ° All Steel 3. 1"H x 9. 6"W x 1. 7"D (folded including connector) 1 lb ©Rane Corporation 080 47th Ave. [. . . ] [. . . ]