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823 High-Low Voltage Indicator pcb
823 High-Low Voltage LED Driver. Click image to download a datasheet.

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High-Low Voltage Led Driver.

The 823 High-Low Voltage Alarm led Driver is a simple, inexpensive solid state electronic assembly designed to illuminate a pair of external warning leds if the measured voltage drops below or rises above two separate pre-set limits. The HLVI can also be used to sound buzzers.

Manufactured using industrial grade components, the High Low Voltage Alarm Led Driver has a basic accuracy of +/-0.5% and drives leds and buzzers up to 100mA. It is therefore an ideal unit for monitoring batteries in a wide range of applications and providing a visual and/or audible warning should they fall below or rise above safe levels.

The 823 low led switch on is delayed upon detection of a low voltage condition so it is suitable for systems where engine cranking or switch tripping causes deep momentary battery voltage dips. The standard delay is approx 60 seconds however a longer delay of approx 5 mins can be provided if required.

Designed to drive the anode of the leds during a fault, the 823 has a positive output configuration with the cathode of the leds connected to battery or power supply negative. It can be used as a low battery voltage alarm and battery charged indicator or as a low battery voltage alarm and high battery alarm, to give just two examples.

Built to order and dispatched in 5-7 working days, the High Low Voltage Led Driver is sized at 70mm Long, 34mm Wide and 15mm high including terminations and is ideal for portable applications or any installation where space is limited. 4mm mounting holes are included so the pcb can be fixed to standard 4mm pcb pillars.

Available in 6, 12 or 24V versions the 823 High Low Voltage Alarm Led Driver is fully adjustable over the following ranges:-
6V Model: 4-8VDC, 12V Model: 9-16VDC, 24V Model: 18-32VDC.

The product is covered by a 2 year warranty against any defect in materials or workmanship.

CBCHLVI-823 (6V) High-Low Voltage Alarm. 18.32 +VAT....
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CBCHLVI-823 (12V) High-Low Voltage Alarm. 18.57 +VAT.... Add to Basket
CBCHLVI-823-1 (24V) High-Low Voltage Alarm. 18.82 +VAT.... Add to Basket