Multimeter for blind

Description

VO-3
Multimeter for blind HAM and CW enthusiasts. Telegraph audio output. 100% brand new and high quality.
The meter is a battery operated handheld multimeter for measuring DC voltage, resistance, temperature and continuity test.
The measuring device is designed for blind and visually handicapped amateurs. It has need display. The measured data are transmitted in the form of sound telegraph brands.
The device can be used even by someone who does not know telegraphy. It is possible to set a very slow rate of transmitting. Therefore the device can also serve as a fun way of learning telegraphy or for measurements in places that are hard to reach and where you can not see the display.
How to use the Multimeter:
Video
Technical specifications
Sound CW output, adjustable speed and tone pitch.
1 minute Power On Idle
DC Voltage
0 ~ 35V measurement range DC Volt  [± (1% + 2dgt)]
Minimum Resolution: 0.1 V
Over-range indication.
Resistance
0 ~ 100R tone continuity test
100R ~ M1  measurement range resistors   [± (5% + 2dgt)]
Minimum Resolution: 100 R
Temperature
-50°C to +125°C measurement range temperature with external probe
Minimum Resolution: 0.1°C        [± (1% + 1dgt)]
Battery:  9V battery 6F22  (
battery not included
)
Size:   Approx.  60*45*21mm   (L*W*H)
Package includes:
1 x VOT-10 CW Sound Multimeter
1 x Set of test leads
1 x temperature probe
1 x CD Instruction User Manual