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Voltage indicators

Products: 40
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USB Power Detector

The device measures current and voltage from the USB slot of the computer or power supply/ charger. It has a male plug, type A and two female sockets for connecting to any...
5.0 (7)
Index: ZAS-04112
Index: ZAS-04112
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Regular price €6.90 Price €6.90

USB sockets tester UNI-T UT658 Dual

The UNI-T UT658 Dual USB socket tester allows you to test USB chargers , portable power supplies, USB type A and C cables and other charging devices. UT658 allows you to...
4.8 (6)
Index: LEC-17180
Index: LEC-17180
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Regular price €16.50 Price €16.50

USB tester Keweisi KWS-1802C current and voltage meter from USB C port - black

A USB meter designed for testing USB type C sockets . It is equipped with a clear LCD screen, which displays voltage, current, capacity, operating time, internal temperature...
5.0 (13)
Index: DNG-17511
Index: DNG-17511
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Regular price €11.90 Price €11.90

Battery charge level and sound level indicator - KA2284

The module is based on the KA2284 system. It is used to measure the input signal with the 5 LEDs, which are gradually included depending on the value of the measured voltage....
3.5 (3)
Index: MOD-07150
Index: MOD-07150
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Regular price €2.90 Price €2.90

Analog ammeter - panel 91C16 mini - 20A

Analog ammeter capable of measuring current in the range up to 20 A. It has a square case in size 40 x 40 mm. The accuracy CLASS 1.5.
5.0 (5)
Index: PRO-10210
Index: PRO-10210
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Regular price €1.90 Price €1.90

AC/DC voltage tester 12V - 250V

AC / DC voltage tester in the form of a screwdriver, which measures in the range from 12 V to 230 V. The measured value is displayed on the LCD display.
5.0 (3)
Index: UPM-03518
Index: UPM-03518
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Regular price €1.90 Price €1.90

DFRobot Gravity - I2C battery charge level meter

A module designed for reading the Li-Pol 3.7 V battery charge level in real-time. It is also equipped with alarm function when the battery level is low, or when battery power...
5.0 (1)
Index: DFR-12263
Index: DFR-12263
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Regular price €12.50 Price €12.50

USB multimeter KWS-V21 Charger Detector

Small size USB meter designed for testing USB 2.0 sockets . Very easy to use. It is equipped with a clear LCD screen, which displays voltage, current, capacity and...
4.8 (16)
Index: DNG-17513
Index: DNG-17513
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Regular price €7.90 Price €7.90

Voltmeter KWS-AC300 with split-core current transfer - 50-30V/100A

The KWS-AC300 is a closed-core AC transformer that allows you to measure current parameters. A small LCD display shows data indicating voltage and current, temperature,...
4.8 (3)
Index: DNG-17859
Index: DNG-17859
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Regular price €21.50 Price €21.50

Non-contact voltage tester Uni-T UT12D-EU

A device that allows you to safely detect voltage. These types of indicators are commonly used in work related to repair or maintenance of cables, sockets and other electrical...
5.0 (4)
Index: LEC-19081
Index: LEC-19081
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Regular price €8.50 Price €8.50

Analog ammeter - 30A

Analog ammeter capable of measuring current in range up to 30 A. It has a square case in size 47 x 47 mm.
5.0 (6)
Index: PRO-10203
Index: PRO-10203
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Regular price €3.50 Price €3.50

Analog voltmeter - panel 91C16 mini - 250V DC

Analog voltmeter capable of measuring voltage up to 250 V. It has a square case in size 40 x 40 mm. Yhe accuracy CLASS 5.0.
5.0 (6)
Index: UPM-09925
Index: UPM-09925
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Regular price €2.50 Price €2.50

LC709203F - LiPoly / LiIon Fuel Gauge and Battery Monitor - STEMMA QT / Qwiic - Adafruit 4712

Battery level indicator from Adafruit. It allows to measure the voltage of Li-Pol and Li-Ion batteries. Displays the voltage value and percentage charge of the cell. The...
Index: ADA-18235
Index: ADA-18235
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Regular price €9.90 Price €9.90

Analog ammeter - panel 91C16 mini - 10A

Analog ammeter capable of measuring current in the range up to 10 A. It has a square case in size 40 x 40 mm. The accuracy CLASS 1.5.
Index: PRO-10209
Index: PRO-10209
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Regular price €1.90 Price €1.90

INA219 FeatherWing - voltage meter - Adafruit 3650

The board is based on the INA219A or INA219B chip (no choice), is used to measure high voltage and DC through the I2C bus with the accuarcy up to 1%. It works with any...
Index: ADA-10320
Index: ADA-10320
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Regular price €11.50 Price €11.50

Voltage Detector Fazer 777 230V

Single-pole indicator for non-contact detection of AC voltage in installations from 220 V to 380 V.
4.5 (2)
Index: GTK-14790
Index: GTK-14790
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Regular price €9.50 Price €9.50

Voltage indicator Orangjo VC701

Orangjo's easy-to-use, compact voltage gauge. Measures AC/DC voltage in the range from 6 V to 380 V. The measurement result is presented by means of LED diodes built into...
Index: DPM-22525
Index: DPM-22525
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Regular price €4.50 Price €4.50

Meter tester UNI-T UT15C

Multifunctional and durable voltage tester  12-690 V AC/DC. It has  in particular : automatic range selection, conductivity test, LCD display and backlight.
4.9 (16)
Index: UPM-01271
Index: UPM-01271
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Regular price €32.50 Price €32.50

Analog voltmeter - panel DH-50 - 40V DC

Analogue voltmeter capable of measuring voltages up to 40 V . It has a square housing with dimensions of 50 x 50 mm. Its accuracy is CLASS 2.5.
5.0 (7)
Index: UPM-09923
Index: UPM-09923
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Regular price €3.90 Price €3.90

Analog ammeter - panel DH-50 - 5A

Analog ammeter capable of measuring current in range to 5 A. It has a square case in size 50 x 50 mm. The accuracy CLASS 2.5.
5.0 (5)
Index: PRO-10201
Index: PRO-10201
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Regular price €3.90 Price €3.90

Analog ammeter - panel BP-65 - 30A

Analog ammeter capable of measuring current up to 30 A . It has a round housing with 82 mm diameter. Its accuracy is CLASS 2,5.
4.9 (12)
Index: PRO-10214
Index: PRO-10214
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Regular price €4.50 Price €4.50

USB tester Keweisi KWS-1802C current and voltage meter from USB C port - white

USB meter in white, designed for testing USB type C sockets . It is equipped with a small but clear LCD screen , which displays voltage, current, capacity, operating time,...
5.0 (2)
Index: DNG-17512
Index: DNG-17512
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Regular price €12.50 Price €12.50

Charger Doctor - current and voltage meter USB

The device measures current and voltage from the USB slot of the computer or power supply / charger. It has a male plug type A and female socket to connect any device -...
5.0 (9)
Index: ZAS-04087
Index: ZAS-04087
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Regular price €2.90 Price €2.90

Metal, wire and wood detector - DPM KC098YB

Detector detects metal, wire and wood. It has a display targetting the object. It is also supplied with an audio alarm device.
5.0 (1)
Index: UPM-05402
Index: UPM-05402
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Regular price €21.90 Price €21.90

Voltmeters - the charm of old devices

Analog voltmeter, or indicator voltage meter, is the longest type of voltage indicator on the market. In the past, each voltage indicator, from a simple amp meter in amplifiers and cassette recorders, to the high class laboratory equipment, was equipped with the so-called measuring "circuit". The principle of operation of such an element is very simple: the flow of current through a light, delicate coil connected to the pointer, causes it to rotate in relation to a permanent magnet. The angle of deflection depends on the current intensity, which in turn - with a specified coil resistance - is proportional to the voltage at its terminals. Thus, it can be seen that the same measuring instrument, depending on the additional resistors connected (or not), can serve as both an ammeter and a voltmeter.

Modern applications of analog indicators

Today, despite the widespread availability of digital devices and their low price, pointer voltmeters and ammeters are still readily used. As an example, let's take old-style devices - audio tube amplifiers are the best proof of the continued popularity of traditional indicators. Also simple power supplies, including laboratory power supplies, are often equipped not with a typical LED display, but just an analog voltage indicator. Inexpensive everyday electrical devices, such as car chargers, also often use indicator meters.

Voltage indicators, or can you "see through walls"?

Yes, of course, if we mean the detection of hidden wires or metal parts in walls. For this purpose, voltage detectors are used, which are able to detect, from a short distance, electric cables through which current flows or magnetic field disturbances caused by metal objects (e.g. rebar). For installers and do-it-yourselfers, a "pen" voltage indicator will also be a great help, which will easily identify the phase wire in an electrical installation.