Omron E2S-W23 — Mini Square Proximity Sensor, 2.5 mm, NPN
SKU: E2S-W23USD 13.00
Subminiature 7.4 x 8 x 23 mm inductive sensor, top sensing, 2.5 mm range, NPN NO, IP67. In stock, China shipping.
1-Year Warranty
Full manufacturer warranty
Global Shipping
Worldwide delivery available
Genuine Omron
100% authentic product
Ready to Ship
Usually ships within 24h
In Stock
This item is available for immediate shipment from our warehouse.
Contact for pricing, bulk discounts, and shipping
Product Overview
The Omron E2S-W23 is a subminiature square inductive proximity sensor with a 2.5 mm sensing range It is manufactured by Omron Corporation. Hengyixin Automation ships this sensor from our Xiamen warehouse with a 30-day DOA return window and a datasheet PDF included in the box.
The sensor detects small metal parts at close range. The 7.4 x 8 x 23 mm polyarylate body sits in places an M8 or M12 cylindrical sensor cannot fit - between circuit-board tracks, inside a tooling pocket, or next to a linear actuator.
Reverse-polarity protection guards against miswired brown and blue leads at the bench. Key specs: Body Style Rectangular 7.4 x 8 x 23 mm, polyarylate resin housing; Sensing Surface Top face, unshielded; Sensing Distance 2.5 mm +/-15% on a 15 x 15 x 1 mm iron target; Output Type NPN open-collector, normally open, 50 mA max at 30 VDC; Supply Voltage 10-30 VDC (12-24 VDC nominal), 13 mA max at 24 VDC no-load; Response Frequency 1 kHz average; Connection Pre-wired PVC cable (2 m standard, 1 m / 3 m / 5 m variants); Protection Rating IP67 (IEC 60529), -25 to +70 degC operating.
Key Features
- Top-surface sensing, unshielded, 2.5 mm +/-15% sensing distance
- 10-30 VDC supply, 13 mA current draw, 1 kHz response
- Polyarylate resin housing, 7.4 x 8 x 23 mm body
- NPN open-collector normally open output, DC 3-wire, 50 mA max load
- SKU: E2S-W23
- Series: E2S-series subminiature square inductive sensor
- Voltage: 10-30 VDC
Best-Fit Applications
- Position confirm inside a tooling pocket on a small pick-and-place head.
- Replacing a failed E2S-W13 with a wider 2.5 mm range.
- Counting metal tabs on a strip-feeding machine at 1 kHz or faster.
Buying Checklist
- Choose E2S-W25 for the PNP version of the same 2.5 mm top-sensing body.
- Choose E2S-Q23 if you need front-face sensing on the same 2.5 mm range.
- Verify the load is below 50 mA - the E2S output cannot switch a relay coil directly.
Technical Specifications
| Series | E2S-series subminiature square inductive sensor |
|---|---|
| Body Style | Rectangular 7.4 x 8 x 23 mm, polyarylate resin housing |
| Sensing Surface | Top face, unshielded |
| Sensing Distance | 2.5 mm +/-15% on a 15 x 15 x 1 mm iron target |
| Output Type | NPN open-collector, normally open, 50 mA max at 30 VDC |
| Supply Voltage | 10-30 VDC (12-24 VDC nominal), 13 mA max at 24 VDC no-load |
| Response Frequency | 1 kHz average |
| Connection | Pre-wired PVC cable (2 m standard, 1 m / 3 m / 5 m variants) |
| Protection Rating | IP67 (IEC 60529), -25 to +70 degC operating |
| Mounting Accessory | Y92E-D2R5 stainless-steel bracket included |
| Approvals | CE |
FAQ for E2S-W23
What is the difference between E2S-W23 and E2S-W25?
Both are subminiature square inductive sensors with the same 2.5 mm top-sensing range. The W23 is NPN normally open; the W25 is PNP normally open. Pick the one that matches your PLC input polarity. For NC outputs, use the W24 (NPN) or W26 (PNP).
Can the E2S-W23 switch a relay coil directly?
No - the NPN output is rated at 50 mA at 30 VDC. A relay coil typically draws 30-100 mA and can exceed that during pull-in. Use the E2S output to drive a PLC input instead, then let the PLC switch the relay.
How do I mount the E2S-W23 on a flat panel?
Use the included Y92E-D2R5 bracket, which fixes the sensor with two M3 screws. The sensor slots into the bracket and is held by friction. Allow at least 75 mm between adjacent sensors to prevent mutual interference (use the W23B variant for tighter spacing).
Similar Products
Explore related Omron models often viewed alongside this product.
