Maintenance & Service, Battery Replacement Indicator

5.2 General Specifications for the 3M™ Shoes and Wrist Strap Tester 747

Ambient Operating Conditions	The unit should always be operated indoors, max. 6.562’ (2000 m) height
Ambient Storage Conditions	Do not store or use the unit where it will be exposed to direct sunlight,
	high temperatures, high humidity or condensation. If exposed to such
	conditions, the unit may be damaged, the insulation may deteriorate, and
	the unit may no longer satisfy its specifications.
Power Supply	“AA,” LR6 alkaline battery x 6 (1.5VDC)
	AC adapter. Input: 100 - 250VAC; Output: 9VDC @ 1.4 A rated load; Output
	plug dimensions: 4.8 mm O.D. x 1.7 mm I.D. x 9.5 mm Length Output plug
	polarization: center positive
	AC adapter must have all local required regulatory certifications
Interface	RS-232C and open collector output
External Jack	Three select qualitative testing thresholds, and one selects the test type
	results to be available at the OUTPUT jack
Selection Switches	Threshold resistance selection switch x 3
	Test result output selection switch x 1
Accessories	AC adapter
	ESD shoe testing cord
	Wall-mounting board
	Instruction manual, CD
	ESD shoe testing plate
	Mounting screw for ESD shoe testing plate (with washer)
	Alkaline battery x 6

6.0Maintenance & Service

CAUTION

To reduce the risks associated with hazardous voltage, which, if not avoided, may result in minor or moderate injury and/or property damage:

•When replacing batteries, turn the power switch off and disconnect all the cables before beginning.

•Always replace battery cover before using the 3M™ Shoes and Wrist Strap Tester 747.