pends on the type of heater), In most case, COM and
NO are used.
2.8 Battery Installation
The DRT2 is operated by two AAA 1.5V Alkaline batter-
ies. Please follow the installation instruction:
1. Find out the battery door at the side of the case.
2. Slide the door upward to open it.
3. Two old batteries would “jump out”.
4. Take out the old batteries.
5. Insert two batteries in right position as shown. Be sure
the polarity of the batteries are in right position.
6. Push and slide the door down to close it.
9
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