Ambco, Biological Test Simulator. OTO-CHEK can be used with any manual audiometer or automatics with normally open relay contacts. Meets OSHA and other requirements for Biological Audiometer Calibration Checks.
Test frequencies: full range 125 to 8K Hz
Stimulus format: continuous or pulsed
Power source: AC adapter (output 14V DC 220mA)or 9 volt battery
Weight: less than 2 pounds
Response output: normally open relay contacts
Warranty: 5 years on base system