Alcohol checker, lightly used, 3 units, 3R SYSTEMS, plus 1 other unit

Non-contact Alcohol Tester / Alcohol Checker
3R SYSTEMS
3R-ALCH01, 2 units
Usage: 397 times, 152 times. Purchase date unknown.
1 additional unit. Usage count and purchase date unknown.
This is a set of 3 used units.

The 3R checkers display the usage count,
but the other unit does not have this feature, so it is unknown.
Judging from the condition of the outer box, it doesn't seem to have been used much.
The purchase date is unknown, so the one-year replacement guideline may have passed.

Shipping is included in the bid price, so there will be no additional cost.
Please bid for the set of 3 units.

The color may not be accurately reproduced due to lighting conditions.
At first glance, there were no problems that would hinder use,
but there may be defects that I have not noticed.
Please judge the condition from the images. No claims or returns accepted.

Cancellations or returns due to bidder's convenience are not accepted at all. Please consider carefully before bidding.

3R Alcohol Checker 3R-ALCH01
Brand: 3R