Voltage Indicator - in many devices we encounter the need to indicate the level of voltage or current. Regardless of whether we are working on our own construction of the laboratory power supply or a simple charger to charge a car battery, properly selected instrument to measure key parameters provides reliable measurement with the appropriate accuracy for the application. Botland store offer lets you find both simple, analog electrical meters and ready-made devices helpful in everyday work of electronics and electricians.
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Strip LED SMD2835 IP20 4,8W, 60 diod/m, 8mm, cold white - 50m
Index: ELD-15653
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- On sale
- Reduced price
- On sale
Voltage indicators
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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....
Index: MOD-07150
Index: MOD-07150
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 -...
Index: ZAS-04087
Index: ZAS-04087
Digital voltmeter - LED 32x32mm - 500VAC - red
Digital voltmeter capable of measuring voltages ranging from 60 V to 500 V AC. It has a square case with LED display 32 x 32 mm.
Index: AKS-12076
Index: AKS-12076
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Voltage Detector Fazer 777 230V
Single-pole indicator for non-contact detection of AC voltage in installations from 220 V to 380 V.
Index: GTK-14790
Index: GTK-14790
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.
Index: PRO-10210
Index: PRO-10210
Analog ammeter - panel 91C16 mini - 30A
Analog ammeter capable of measuring current up to 30 A . It has a square housing with dimensions of 40 x 40 mm. Its accuracy is CLASS 1.5.
Index: PRO-10211
Index: PRO-10211
Analog ammeter capable of measuring current in the range up to 15 A. It has a square case in size 47 x 47 mm.
Index: PRO-10202
Index: PRO-10202
Analog ammeter capable of measuring current in range up to 30 A. It has a square case in size 47 x 47 mm.
Index: PRO-10203
Index: PRO-10203
Analog ammeter - panel 91C16 mini - 5A
Analog ammeter capable of measuring current range to 5 A. It has a square case in size 40 x 40 mm. The accuracy CLASS 1.5.
Index: PRO-10208
Index: PRO-10208
Blow W3 - Energy meter, digital wattmeter
Multifunctional and easy to use electronic wattmeter with a large and clear LCD display , designed for measuring voltage and costs of consumed energy. It enables control of...
Index: PRO-19624
Index: PRO-19624
Analog voltmeter 91C16 Mini - 250V
Analog voltmeter capable of measuring voltage up to 250 V. It has a square case in size 40 x 40 mm. Yhe accuracy CLASS 1.5.
Index: UPM-09925
Index: UPM-09925
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.
Index: PRO-10201
Index: PRO-10201
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.
Index: PRO-10214
Index: PRO-10214
Voltage indicator Rebel RB-15B
Indicator allowing for quick determination of the voltage we are currently working with. The measurement is presented using LEDs on the front of the device. Each diode...
Index: LEC-18382
Index: LEC-18382
Analog ammeter capable of measuring current in range up to 10 A. It has a square case in size 50 x 50 mm. The accuracy CLASS 2.5.
Index: UPM-09921
Index: UPM-09921
Analog ammeter capable of measuring current in range up to 30 A. It has a square case in size 50 x 50 mm. The accuracy CLASS 2.5.
Index: UPM-09922
Index: UPM-09922
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
Analog ammeter - panel BP-65 - 10A
Analog ammeter capable of measuring current up to 10 A . It has a round housing with 82 mm diameter. Its accuracy is CLASS 2,5.
Index: PRO-10213
Index: PRO-10213
Analog voltmeter - panel 91C16 mini - 30V DC
Analogue voltmeter capable of measuring voltages up to 30 V . It has a square housing with dimensions of 40 x 40 mm. Its accuracy is CLASS 1.5.
Index: PRO-10217
Index: PRO-10217
DFRobot qualMeter Basic - power supply/charger and USB cable tester
qualMeter is a simple DIY device that enables you to diagnose the quality of your USB charging cable and the charger itself. It allows you to check wires type: female microUSB...
Index: DFR-10166
Index: DFR-10166
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DFRobot qualMeter miniLoad - charger and USB charger cable tester - for qualMeter Basic
qualMeter is a simple DIY device that enables you to diagnose the quality of your USB charging cable and the charger itself. qualMeter miniLoad is an extension for qualmeter...
Index: DFR-10169
Index: DFR-10169
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- On sale
Analog ammeter - panel 91C16 mini - 1A
Analog ammeter capable of measuring current in the range up to 1 A. It has a square case in size 40 x 40 mm. The accuracy CLASS 1.5.
Index: PRO-10205
Index: PRO-10205
Voltage indicator REBEL RB-15A
Voltage indicator for simple AC and DC voltage measurements. The LEDs on the device show in which range the measured voltage is contained. The meter is also equipped with...
Index: LEC-18381
Index: LEC-18381
Multifunctional and durable voltage tester 12-690 V AC/DC. It has in particular : automatic range selection, conductivity test, LCD display and backlight.
Index: UPM-01271
Index: UPM-01271
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.