"THIS INSTRUMENT FOR GOOD TRAINER USE ONLY,LIGHTING:5 VOLTS UNFILTERED WHITE. SELF TEST LIGHT(GREEN) AND LOW ALTITUDE WARNING LIGHT (RED) ARE Z8V.;WARNING SWITCH N.O.;A CLOSURE SHALL OCCUR BETWEEN PINS J1-U AND JI-V WHEN THE POINTER IS AT OR BELOW THE INDEX MARKER WITHIN THE TOLERRANCE;POWER SWITCH N.O.,WHEN INDEX MARKER IS FULLY CCW BEHIND MASK, A CLOSURE SHALL OCCUR BETWEEN PINS JI-J AND J1-N WHEN THE MARKER IS ROTATED ON TO A POINT AT OR BELOW O."