2 AAA 1.5V (included). Replacement with disposable batteries. Do not use rechargeable batteries. Disposal of batteries safely inÜbereinstimmung with local authority requirements.
Timer
20, 40 or 60 minutes of the countdown timer.
apparatus
0 to 500 microamperes (uA) in 50 uA increments.
Frequency
0.5 Hz (pulses per second) combines value with a constant 0.4 Hz. The average pulse repetition rate is 0.8 Hz
pulse width
Varies between 0.25, 0.5, 0.75 and 1 second.
Pulse charge
At 500 uA pulse charge varies between 125, 250, 375 and 500 micro-coulombs (mu.C). Every 10 seconds, the total charge is 1.25 millicoulombs (mC) in each direction.
Waveform
The impedance range where the waveform parameters should move, is 100 Ω to 10 K Ω. The waveform is composed of bipolar square waves at a 50% duty cycle, which is repeated at 10 second intervals. , The waveform is symmetrical, in order to achieve a 0 net current in both directions (see illustration).
Mechanics
Height: 9.8 cm Width: 6.3 cm Depth: 2.0 cm, weight: 101 g with batteries