Radio Design Labs FP-MR2 Message RepeaterSpecifications: Recording Input:; Input: 10 k Ohm unbalanced; Input Level: -20 dBV to 0 dBV; Frequency Response: 80 Hz to 12 kHz (+/- 1.5 dB); Noise below +4 dBu: 70 dB (50 to 150 Hz); Output: 150 Ohm balanced or 75 Ohm unbal.; Output Level: +4 dBu nominal; Control Inputs (2): TRIG and DISABLE, Pull to ground, 1 mA; Control Outputs (2): PLAYING and EOM, Open-collector @ 25 mA; Power Requirement: 24 Vdc @ 60 mA, Ground-referenced; Dimensions:; Height: 1.36 in. 3.46 cm; Width: 3.25 in. 8.26 cm; Length: 5.0 in. 12.7 cm; Ambient Operating Environment: 0 C to 55 C; Features: Repeating Single Message; Music Quality Message Recording; Up to 1.7 Minute Digital Message Storage; External Message Actuation; Interval Timer to Repeat Message Playback; Background Music Input; Automatic Voice-Over or Music Ducking;