Weak batteries may reduce the accuracy of the 4410A or APM-16.
Models 4410A and APM-16 use one 9V alkaline battery. The 4412A uses one 9V NiMH rechargeable battery or an AC converter.
Weak batteries may reduce the accuracy of the 4410A or APM-16.
Models 4410A and APM-16 use one 9V alkaline battery. The 4412A uses one 9V NiMH rechargeable battery or an AC converter.