Product Overview
The NorthStar NP2-ES+ is the updated plug-in ES-series detector for access control and gate systems that need a compact detector with more front-panel information than the earlier basic ES-style units. It is used with a buried loop to sense vehicles and communicate that detection back to the control board. The digital display, EZ Tune setup, and bar graph loop diagnosis are helpful when a customer or installer needs a cleaner way to tune sensitivity and see loop activity at the detector. It can be used for common loop functions such as exit, safety/reverse, presence, and gate hold-open when the operator board accepts the ES+ plug-in format. The plus version should still be matched by socket and output requirements; it is not automatically interchangeable with every NorthStar detector just because the model number starts with NP2.
Vehicle loop detectors are part of the control side of the gate system. They do not replace photo eyes, gate edges, or other monitored entrapment protection devices required by the operator and current safety standards. A loop detector should be wired only to the input function intended by the operator manufacturer.
Compatible With
Select current gate operators, parking access control systems, and access panels designed for the NorthStar NP2 ES+ plug-in detector platform. Common applications include loop inputs for open, reverse, safety, hold-open, presence, entry, and exit functions when the socket and output requirements match. It is related to the NP2-ES family but adds digital display, bar graph diagnosis, pulse on entry/exit, delay, extend, and selectable presence features. Verify the actual detector socket, voltage, output type, and operator manual before replacing an NP2-ES, NP2-ESL, NP2-C, or standard NP2 detector with the ES+ version.
Features & Specifications
| Manufacturer | NorthStar Controls |
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| Product Type | Single channel dual output plug-in vehicle loop detector with digital display |
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| Part Number | NP2-ES+ |
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| Application | Vehicle detection for automated gates, parking gates, traffic control, and access control systems |
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| Compatible Operator Type | Select gate operators, barrier gates, parking systems, and access controllers with matching detector power and input style |
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| Voltage | Low-voltage plug-in detector; verify current NP2 ES+ supply requirement by manual and socket |
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| Connection | Plug-in detector for compatible current access control and gate operator sockets |
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| Output | Dual output vehicle detection; verify control-board input requirements |
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| Sensitivity | 10 sensitivity settings with digital display / EZ Tune |
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| Frequency | 4 frequency settings |
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| Inductance Range | Commonly 20uH to 1500uH on NorthStar NP2 family detectors; verify the exact data sheet for the installed model |
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| Temperature Range | Commonly -30 F to +180 F on NorthStar detector references |
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| Notes | Match by part number, voltage, socket or terminal style, output type, and control board loop function |
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Also Known As / Related Part Numbers
- NP2-ES+
- NP2 ES+
- NP2-ES Plus
- NP2 ES Plus
- NP2-ESP
- NP2ESP
- NorthStar NP2-ES+
- NorthStar NP2 ES PLUS
- ESPLUS
Technician Note
When replacing a loop detector, do not assume that all NorthStar NP2-style detectors are interchangeable. The detector may share the same general product family while using a different voltage, socket, output type, or low-current connection style. If the loop has nuisance trips, no detection, or fault indications, check the loop and lead-in wiring before blaming the detector.
Before Ordering Checklist
- Match the exact part number from the old detector when available.
- Confirm detector supply voltage in the operator or access control enclosure.
- Check whether the system needs relay output, solid-state output, single output, dual output, or multiple loop channels.
- Verify the socket, plug, terminal strip, or harness style.
- Confirm the loop function: exit, reverse, safety, shadow, hold-open, center, or presence.
- Inspect the loop and lead-in for open, shorted, wet, or damaged wiring before replacing the detector.
Professional Advisory
Loop detector wiring should be handled with the gate operator powered down and according to the operator wiring diagram. For high-voltage detector power, damaged gate wiring, nuisance gate movement, or missing safety devices, use a qualified gate technician. Do not bypass safety inputs to make a detector or gate operator run.
Product Questions & Answers
What is the NP2-ES+ used for?
The NP2-ES+ is used with an inductive vehicle loop to send a vehicle detection signal to a compatible gate operator, parking gate, or access control panel.
Will the NP2-ES+ replace any NorthStar loop detector?
No. Match the original detector part number, voltage, socket or wiring style, output type, and the loop function. Similar NorthStar detector numbers can have different power and connection requirements.
What voltage does the NP2-ES+ require?
This model is listed for Low-voltage plug-in detector; verify current NP2 ES+ supply requirement by manual and socket. Confirm the voltage available in the operator control box before installing a replacement detector.
Can the NP2-ES+ be used for exit or safety loops?
It may be used for exit, reverse, safety, hold-open, or presence loop functions when the operator board supports that input and the detector output is wired correctly.
What should be checked before ordering the NP2-ES+?
Check the old detector number, loop wiring, socket or terminal style, supply voltage, output contact type, and the gate operator wiring diagram. A qualified technician should handle unsafe wiring or high-voltage service.
