Features:

1.Preset speed mode  (high-mid-low speed).
A gentle, pulsed stimulus begins to increase at a rate
2.Specifically designed for patient comfort.
If the patient indicates perception, simply release the button. The stimulus stops immediately, but the numbers remain frozen on the face for about 3 minutes.
3.Convenient to operate
Maximum stimulus-- -80.
Between 0-40, the patient feels ache and anesthesia, alive teeth nerve
Between 40-80,with above-mentioned reaction,part of teeth nerve dead
80, no above-mentioned reaction, dead teeth nerve
4.The device turns itself off three mimutes later after operation(No wasted batteries.)
5.Battery-operated, Standard 9-Volt batteries, Extremely economical

Technical:

Output：DC  9.0V；
Current：50mA
Voltage range：DC 6.0-10.0V
Size：186*38*24mm
Net weight：220g

Packing:

Main unit 1 pc
Testing cord  1pc
Test electrode  1 pc (long)             
Test electrode  1 pc (short)
Stainless hook  4 pc
User's manual  1pc

Warranty: One Year! Service: Whole Life!