3 Tester Features100 U1461A/U1453A User’s GuideNon-Contact AC Voltage Detection (Vsense)For model U1461A only: Vsense is a non-contact voltage detector that detectsthe presence of AC voltages nearby.1 Press and hold to enable Vsense (on any position of the rotary switchexcept ).2 Press to toggle the Vsense’s sensitivity between HIGH SENSE(high sensitivity) or LOW SENSE (low sensitivity).3 Press and hold again to disable Vsense.WARNING – You are advised to test on a known live circuit within the rated AC voltagerange of this product before and after each use to ensure that Vsenseworks.– Voltage could still be present even if there is no Vsense alert indication.Do not rely on Vsense with shielded wires. Never touch live voltage orconductor without the necessary insulation protection or power off thevoltage source.– Vsense may be affected by differences in socket design, insulationthickness, and insulation type.CAUTION You are advised to measure voltage by using test leads through the voltagemeasurement function after using Vsense, even if there is no alert indication.NOTE If the presence of AC voltage is sensed, the tester will beep and the Vsense redLED at the top of the tester will turn on. The audible and visual alert allows youto easily sense nearby AC voltage presence.No resolution and accuracy of voltage measurement will be d isplayed in thismode.
