We thought we would utilize the on/off switch on mine

• Portion record
• 3.5 digit electronic voltmeter, board mount, power supply managed, 200mv full scale. Are available approximately ten dollars from All Electronics Corp. 1-800-825-5432 role # PM-128
• Little toggle switch, SPST, collect everywhere, broadcast Shack, your own rubbish cabinet, etc. All electronic devices Corp. role # MTS-4 does fine.
• 9 Volt Transistor radio battery.
• 9 Volt power connector. All Electronics Corp. Parts # BST-8
• 1 100 Kohm resistor 1/2 watt 0.5%
• 1 9.99 Mohm resistor 1/2 watt 0.5 %

The resistor prices mentioned above are proper people for any meter offered by All electronic devices Corp., however your meter may specify various prices to utilize.