Instruct el: BE.059 ICES EPEE FM MIC 1. Open Battery Compartment by Screwdriver. 2. Insert two “AA” batteries, checking the + and ~ ends of the batteries. We recommend do not mix alkaline, standard (carbon-zinc) or rechargeable (camiknickers) batteries, 3. Screw backs the battery door. ‘ We recommend + Do not mix old and new batteries, * Removing batteries if unit is not used for more than 30 days, Radio 1. This FM MIC needs a radio for receiver.