6 GammaRAE II ResponderInserting & Replacing BatteriesGammaRAE II Responder uses two AA alkaline batteries asits power source (use only Duracell MN1500 orEnergizer E91). To change the batteries:1. Use the provided tool to open the coveron the side of the unit. Turn the screwcounterclockwise to loosen the screw,and then tilt the coveroff.2. Insert batteries intothe compartmentaccording to thelegend on the rear of the GammaRAE II Responder,making sure the batteries’ polarity is correct.3. Replace the cover and turn the screwclockwise to secure the cover.