Digital vacuum tube tester, Duokit 2
This is a new version of the tube tester that we're selling, they have the same function, but this new tester also can test the diodes and valves.
VACUUM TUBE TESTER KIT LIST:
1x main board
1x LCD display
1x 0-115-230v 10VA transformer
1x AC-DC 9V 1A power supply ( with 90-265VAC input)
1 set wires (with potentiometer and switch)