Smart LED Pressure Switch for Water/Air, NPN/PNP/4-20mA

5 out of 5 based on 1 reviews | Write a review

$179.41

The smart LED pressure switch features a 4-digit LED display and an all-in-one design combining pressure measurement, control output, and monitoring. Using an oil-filled front end with a diaphragm-sealed piezoresistive sensor, the pressure switch supports a 0–600 bar control range and offers IP65 protection, suitable for both air and water. NPN, PNP, and 4–20 mA outputs provide compatibility for a wide range of hydraulic and pneumatic applications.

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SKU: ATO-LPS-QDKG

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Delivery date: 6-12 days

Overview

The smart LED pressure switch offers clear pressure indication and integrated control in one compact unit. Built with a reliable piezoresistive sensor and suitable for air or water, the pressure switch delivers dependable output for general hydraulic and pneumatic applications.

Specification

Model	ATO-QDKG-VD
Display type	4-digit LED Display
Stability	≤ 0.2% FS/year
Control accuracy	≤ ±0.5% FS
Power supply	24VDC ± 20%
Load capacity	< 24V 1.2A
Operating temperature	-30°C ~ 70°C
Switch life	> 1,000,000 Cycles
Protection rating	IP65
Display accuracy	± 0.1% FS
Control range	0 ~ 600 Bar
Display range	-1999 ~ 9999
Maximum power	< 3W
Medium temperature	-40℃ ~ 85℃
Relative humidity	0 ~ 80%
Connection type	5-pin Aviation Connector
Output signal	PNP / NPN / 4-20mA
Weight	About 250 g

Feature

Four-digit LED display for clear pressure indication.
Integrated output control, with the smart LED pressure switch designed for easy operation.
Piezoresistive sensor with oil-filled isolation diaphragm.
Digtal LED pressure switch supports both gas and liquid media.
Multiple output: NPN, PNP, and 4–20 mA.
Widely applied in hydraulic and pneumatic systems where the mini LED pressure switch ensures stable performance.
IP65 protection rating for harsh environments.
The pressure switch comes with a 5-pin aviation connector.

Detail

led pressure switch detail

Size (unit: mm)

Smart led pressure switch size

Wiring

Smart led pressure switch wiring

Tips: How to prevent electromagnetic interference in a smart LED pressure switch?

Keep wiring runs as short as possible to minimize noise pickup.
Using the smart LED pressure switch, shielded cables help improve resistance against electromagnetic interference.
Avoid installing the pressure switch near strong electromagnetic sources to prevent signal disruption.
When using a micro flexible hose for installing the mini pressure switch, ensure the housing is properly grounded for stable performance.

Existing reviews of Smart LED Pressure Switch for Water/Air, NPN/PNP/4-20mA

Simplified Our Pressure Control Setup

Instead of using separate components for monitoring and switching, this pressure switch handled everything in one unit. The LED display is easy to read, setup took very little time, and the switching response has been consistent in our hydraulic system. It's been a practical upgrade that reduced both wiring and maintenance.

From: Sophiau | Date: 02/08/2026

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