E3Z Compact Photoelectric Sensor

Name: E3Z Compact Photoelectric Sensor
Brand: DAIDISIKE
SKU: e3z-compact-photoelectric-sensor
Availability: InStock

Compact 31×11×22mm DC photoelectric sensor with diffuse (30-300mm) or through-beam (5m) detection and NPN/PNP output.

E3Z Compact Photoelectric Sensor - product photo

🔍 Click to enlarge · 1/11

Technical Specifications

Output Type	D61/T61 = NPN N.O., D81/T81 = PNP N.O., D62/T62 = NPN N.C., D82/T82 = PNP N.C.; 20/30 series: N1 = NPN N.O., P1 = PNP N.O., N2 = NPN N.C., P2 = PNP N.C.
Sensing Mode / Distance	Diffuse-reflective D series 30-100mm (adjustable), 20 series 30-200mm (adjustable), 30 series 30-300mm (adjustable); Through-beam T series 5m
Supply Voltage	10-30VDC
Protection Rating	IP65
Housing Dimensions	31×11×22mm
Material	PBT plastic

Overview

E3Z is a compact-housing photoelectric sensor family built for OEM machine builders and panel integrators who need to fit object or presence detection into tight mounting spaces. Its diffuse-reflective versions sense objects directly without a reflector, while its through-beam version pairs an emitter and receiver across a gap for longer-range, surface-independent detection.

The full output matrix (NPN or PNP, N.O. or N.C.) lets one series interface with either sinking or sourcing PLC input cards, while three adjustable diffuse-reflective ranges (30-100mm, 30-200mm, 30-300mm) and a 5 m through-beam option cover both near and long-distance detection needs within a 31 × 11 × 22 mm, IP65-rated, 10-30VDC housing.

Features & Benefits

Compact Housing for Tight Spaces

The 31 × 11 × 22 mm PBT housing fits into mounting spaces too small for larger sensor bodies. This makes it suitable for OEM machine sub-assemblies and panel-mounted detection points.

Full NPN/PNP × N.O./N.C. Output Matrix

D61/T61 and D81/T81 give NPN or PNP normally-open outputs, while D62/T62 and D82/T82 give NPN or PNP normally-closed outputs (the 20/30 series uses N1/P1/N2/P2 the same way). One series covers both sinking (NPN) and sourcing (PNP) PLC input types.

Three Adjustable Diffuse-Reflective Ranges

Diffuse-reflective versions are offered in 30-100mm, 30-200mm, and 30-300mm adjustable ranges. Matching the range to the actual working distance helps reduce background interference.

5 m Through-Beam Detection

The through-beam version uses a separate emitter and receiver to detect across a 5 m gap. Because detection depends on beam interruption rather than reflection, it is not affected by the target's color or surface finish.

IP65-Rated Housing

The IP65 rating protects against dust ingress and water splashes, suiting general industrial environments with dust or occasional splashing.

Wide 10-30VDC Supply Range

A 10-30VDC input range covers common industrial DC supply voltages, simplifying power design across control cabinets.

Applications

Part-in-Place Detection on Assembly Lines — Diffuse-reflective versions detect the workpiece directly, with the 30-100/200/300mm ranges covering different station spacing needs.

Box or Film Detection on Packaging Machinery — The near-range 30-100mm setting with adjustable sensitivity suits close-range detection of small packaging items.

Cross-Conveyor Object Detection — The through-beam version's 5 m range can span wider conveyor belts or line aisles.

Pallet, Fixture, and Carrier Position Confirmation — Diffuse-reflective or through-beam versions confirm whether a carrier is in position, with NPN/PNP output matching the site PLC type.

Space-Constrained OEM Machine Sub-Assemblies — The 31 × 11 × 22 mm compact housing can be installed at detection points inside mechanisms with limited space.

General Presence Detection in Dusty or Splash Environments — The IP65 rating suits general industrial environments with dust and occasional splashing.

Models & Ordering Information

Diffuse-Reflective, 30-100mm (adjustable)

E3Z-D61E3Z-D81E3Z-D62E3Z-D82

D61 = NPN N.O., D81 = PNP N.O., D62 = NPN N.C., D82 = PNP N.C.

Diffuse-Reflective, 30-200mm (adjustable)

E3Z-20N1E3Z-20P1E3Z-20N2E3Z-20P2

N1 = NPN N.O., P1 = PNP N.O., N2 = NPN N.C., P2 = PNP N.C.

Diffuse-Reflective, 30-300mm (adjustable)

E3Z-30N1E3Z-30P1E3Z-30N2E3Z-30P2

N1 = NPN N.O., P1 = PNP N.O., N2 = NPN N.C., P2 = PNP N.C.

Through-Beam, 5m

E3Z-T61E3Z-T81E3Z-T62E3Z-T82

T61 = NPN N.O., T81 = PNP N.O., T62 = NPN N.C., T82 = PNP N.C.

How to Select

Choose diffuse-reflective (D / 20 / 30 series) if you need to detect the object directly without mounting a separate reflector.
Choose through-beam (T series) if you need longer range, or the target's surface is reflective or its color varies and you need stable detection.
For diffuse-reflective, match the sensing distance to your actual working distance: 30-100mm (D series), 30-200mm (20 series), or 30-300mm (30 series) — all adjustable, and generally the smallest range that covers your distance reduces background interference.
For through-beam, the sensing distance is fixed at 5m (T series).
If your PLC input card is NPN (sinking), choose an N-prefix or D61/D62/T61/T62 model; if it is PNP (sourcing), choose a P-prefix or D81/D82/T81/T82 model.
Choose 61/N1/P1 (N.O.) if you need the output to turn on when the target is detected, or 62/N2/P2 (N.C.) if you need the output to turn off when the target is detected — confirm actual Light-ON/Dark-ON behavior against your wiring.
Supply voltage (10-30VDC), housing size (31×11×22mm), material (PBT), and protection rating (IP65) are the same across the whole series, so no further differentiation is needed on these points.

📘 Need the full method? NPN vs PNP Sensor Outputs Explained

When NOT to specify the E3Z — and what to use instead

Detecting dark-colored, matte-black, or steeply angled targets with a diffuse-reflective D/20/30 model

Why not: The 30-100mm/30-200mm/30-300mm diffuse-reflective ranges depend on light reflected back from the target itself, so a low-reflectivity or angled surface will trigger well short of the rated adjustable range.

Use instead: the E3Z series' own through-beam (T) version, which detects by beam interruption rather than reflected light, or a through-beam pair for longer, color-independent range

Spans longer than the fixed 5 m through-beam range, e.g. wide gates or long conveyor aisles

Why not: The E3Z through-beam (T) version has a single fixed sensing distance of 5 m; no longer-range variant is offered in this series.

Use instead: a through-beam pair rated for a longer range (up to 15 m)

Personnel guarding or a safety interlock on a hazardous machine opening

Why not: The E3Z series is a general-purpose presence/object sensor; nothing in its specification qualifies it as a safety component.

Use instead: a safety-rated light curtain or safety interlock

Only one mounting point is available on the machine, with no place to install a facing emitter/receiver pair

Why not: The through-beam (T) version needs two aligned mounting points across the gap; only the diffuse-reflective (D/20/30) versions work from a single side.

Use instead: the diffuse-reflective D/20/30 versions of the same series

The target must be discriminated by color, pattern, or a complex surface feature rather than simple presence

Why not: Both the diffuse and through-beam E3Z versions only report reflected light or beam interruption, with no feature-recognition capability.

Use instead: a vision-based one-touch-teach sensor for feature discrimination

Specifications we do not publish yet

We only publish a figure once we are confident it is true. The items below are still being validated through further testing and real-world customer feedback, so for now we would rather leave them open than guess. If one of them matters to your design, ask us for the latest validated status.

Minimum detectable object size for both diffuse-reflective and through-beam versions
Light source type/wavelength (e.g. infrared LED and nm value)
Response time (operate/reset)
Hysteresis (differential travel)
Operating and storage temperature range
MTBF or expected service life
Cable/connector type (pigtail length, connector style)
Applicable certification standards beyond 'available on request'

Frequently Asked Questions

What is the difference between the diffuse-reflective and through-beam versions of the E3Z series?

The diffuse-reflective version (D/20/30 series) has the emitter and receiver in one housing and detects objects directly by their reflected light, with adjustable ranges of 30-100mm, 30-200mm, or 30-300mm. The through-beam version (T series) uses a separate emitter and receiver facing each other across a 5 m gap; detection happens when the object interrupts the beam, making it less affected by the object's color or surface finish.

How do I know if I need NPN or PNP output?

NPN (sinking) output pulls the signal line low when active and is common in Japanese-style PLC input wiring; PNP (sourcing) output pushes the signal line high when active and is common in European-style PLC input wiring. Check your PLC's input card type before ordering — the E3Z series offers both in the same housing footprint.

What do the N.O. and N.C. designations mean?

N.O. (Normally Open, e.g. D61/D81/N1/P1) means the output is inactive until the sensor detects the target. N.C. (Normally Closed, e.g. D62/D82/N2/P2) means the output is active by default and switches off when the target is detected. Choose based on your control logic's fail-safe requirements.

What is the housing size and material of the E3Z series?

31 × 11 × 22 mm, made of PBT plastic.

What is the supply voltage and protection rating?

10-30VDC supply, IP65-rated housing (protected against dust ingress and water splashes).

What is the maximum sensing distance of the through-beam version?

5 m.

What are the three adjustable sensing ranges of the diffuse-reflective version?

30-100mm (D series), 30-200mm (20 series), and 30-300mm (30 series), each with adjustable sensitivity.

Is the sensing distance fixed or adjustable?

The diffuse-reflective versions offer adjustable sensitivity to tune the actual trigger distance within their stated ranges; the through-beam version has a fixed 5 m sensing distance with only an alignment / gain adjustment.

Can the E3Z series provide certification documents such as CE?

Certification documents are available on request.

Works Well Together

On the same machine or line, E3Z is typically ordered together with: Proximity Sensors · Laser Switch Sensors · Relay & Timer Modules

Related Products in Photoelectric Sensors

Browse all Photoelectric Sensors →