![HVTest XP-1A Manual Download Page 7](http://html.mh-extra.com/html/hvtest/xp-1a/xp-1a_manual_2190367007.webp)
7
10. Vacuum mechanical pump sampling; provide positive draft for the
probe.
11. With gradient function.
12. Wireless, portable, just need two batteries.
13. 35 cm flexible stainless steel probe rod.
III. Instrument composition
1. Probe
2. Probe guards
3. Power switch
4. Battery test
5. Reset
6. Audio gradient
7. Sensitivity increase
8. Sensitivity reduce
9. LED indication
10. Flexible probe
IV. Preparation
Battery install
As shown, remove battery cover at the bottom of the product; insert the
battery, the negative electrode outward (toward the direction of the battery
compartment cover). See figure 2.