Specifications:
- Pulse rate: 1Hz
- Frequency spectrum, electrical : 1Hz to 20KHz
- Frequency spectrum, acoustic :  200Hz to 5KHz
- Output level, electrical : 0 to 1V (Acoustic level is fixed)
- Output source impedance : 1KΩ
- Power : 9V PP3 battery (= approx 50 hours)
- Power drain : 10mA

Receiver:
- Frequency spectrum, electrical : 1Hz - 20KHz
- Frequency spectrum, acoustic : 10Hz- 1KHz
- Input impedance (Mic) : 1KOhm
- Input impedance (Line) : 10KOhm
- Input level (Mic) : 10mV - 1V
- Input level (Line) : 0.5V to 50VOutput level : 0V to 1V
- Power : 9V PP3 battery (= approx 50 hours)
- Power drain : 10mA

Physical Characteristics(For each box):
- Dimensions : 140mm W x 80mm D x 50mm H
- Weight : 0.25 Kg
- Shipping weight: 0.65 Kg
- Operating temperature :  0 - 50 deg C
- Storage temperature :  -30 - 75 deg C

Package Including:
- 1 x Tester