Q10 Series Square Inductive Proximity Switch (Q102.5 / Q104)

Name: Q10 Series Square Inductive Proximity Switch (Q102.5 / Q104)
Brand: DAIDISIKE
SKU: q10-series-square-inductive-proximity-switch
Availability: InStock

Compact side-sensing square inductive proximity switch with 2.5mm or 4mm sensing distance for tight spaces.

Q10 Series Square Inductive Proximity Switch (Q102.5 / Q104) - product photo

🔍 Click to enlarge · 1/8

Technical Specifications

Sensing Type	Inductive
Housing Shape	Square (Q10)
Sensing Distance (Q102.5)	2.5 mm
Sensing Distance (Q104)	4 mm
Sensing Face	Side (lateral) sensing
Output Type	NPN / PNP, NO / NC
Wiring	3-wire (DC)
Supply Voltage	10-30VDC
No-load Current	< 10mA
Max Load Current	150mA
Overload Current Protection Point	180mA
Short-circuit Protection	Yes
Ingress Protection	IP67
Operating Temperature	-25C to +70C
Housing Material (Q102.5)	ABS
Housing Material (Q104)	PBT
Body Thickness (Q102.5)	6 mm
Body Thickness (Q104)	6.5 mm
Footprint	approx. 10mm(W) x 27-30mm(L)
LED Indicator	Yes
Cable Color Code	BN = +, BK = signal, BU = -

Overview

The Q10 series (Q102.5 / Q104) is a square-body inductive proximity switch that senses metal targets from its side face rather than its front face, making it suitable for installations where a flush front-facing sensor cannot fit. It is a 3-wire DC device used by machine builders and panel integrators who need a small, low-profile metal-detection point on conveyors, indexing tables, or cam/shaft mechanisms.

Q102.5 detects at 2.5mm and Q104 detects at 4mm, both in the same 10mm(W) x 27-30mm(L) footprint, with body thickness of 6mm for Q102.5 (ABS housing) and 6.5mm for Q104 (PBT housing). The switch is available in NPN or PNP output, normally open (NO) or normally closed (NC), operates on 10-30VDC, includes a built-in LED status indicator, and carries an IP67 ingress protection rating with an operating temperature range of -25C to +70C.

Features & Benefits

Side-face sensing for tight installation spaces

The sensing face is on the side of the block, not the tip, so the switch can be mounted where a standard front-sensing barrel proximity switch has no clearance.

Two sensing-distance options in one compact footprint

Q102.5 detects at 2.5mm and Q104 detects at 4mm, both in the same 10mm(W) x 30mm(L) footprint (body thickness 6mm for Q102.5, 6.5mm for Q104), letting engineers pick sensing range without changing mounting geometry.

Flexible output configuration

Available in NPN or PNP, normally open (NO) or normally closed (NC), covering the four most common wiring requirements for PLC and relay-based control panels.

Standard 3-wire DC color-coded cable

Brown (BN) = positive, black (BK) = signal, blue (BU) = negative, matching common industrial wiring conventions for straightforward field installation.

Built-in LED indicator

The switch includes an LED status indicator to show detection state at a glance during commissioning and troubleshooting.

IP67-rated, wide operating temperature range

Rated IP67 ingress protection and rated for -25C to +70C operation, suited to typical factory-floor environments with dust, splash, and moderate temperature swings.

Short-circuit and overload protection

The output includes short-circuit protection with an overload current protection point of 180mA, reducing the risk of sensor damage from wiring faults.

Applications

Cam / shaft profile detection — Mounted alongside a rotating camshaft to detect cam lobes or shaft features as they pass, used for cycle timing or position feedback on rotating machinery.

Metal pallet / fixture positioning on a conveyor — Installed beneath a conveyor track to confirm a metal pallet or workholding fixture has reached its stop position before the next process step.

Rotary turntable / indexing table position detection — Mounted at the edge of a rotary dial or turntable to detect metal dogs/targets marking each index station, confirming the table has stopped at the correct position.

Space-constrained panel/bracket mounting — The low-profile, side-sensing block shape fits into narrow mounting brackets where a cylindrical (M8/M12) barrel sensor's front-sensing geometry would not clear surrounding structure.

General metal-target presence/absence detection on automation equipment — As a standard 3-wire DC inductive switch with NO/NC and NPN/PNP options, it serves as a general-purpose metal proximity input for PLC-controlled machinery.

Models & Ordering Information

Q102.5 (2.5mm sensing distance)

Q102.5N1Q102.5P1Q102.5N2Q102.5P2

ABS housing, 6mm body thickness

Q104 (4mm sensing distance)

Q104N1Q104P1Q104N2Q104P2

PBT housing, 6.5mm body thickness

How to Select

Need 2.5mm sensing distance -> choose Q102.5 series (ABS housing, 6mm thickness).
Need 4mm sensing distance -> choose Q104 series (PBT housing, 6.5mm thickness).
Sinking-input PLC / control circuit that pulls current to 0V -> choose N (NPN) output.
Sourcing-input PLC / control circuit that pulls current to +V -> choose P (PNP) output.
Output should activate (turn ON) when a metal target is present -> choose 1 (Normally Open, NO).
Output should activate (turn ON) when no metal target is present, and switch OFF when target arrives -> choose 2 (Normally Closed, NC).
Combine into a part number using the naming rule: Q10 + sensing distance (2.5/4) + N/P (NPN/PNP) + 1/2 (NO/NC). Example: 2.5mm, NPN, NO -> Q102.5N1; 4mm, PNP, NC -> Q104P2.
Confirm mounting envelope: body footprint approx. 10mm(W) x 27-30mm(L); Q102.5 = 6mm thick, Q104 = 6.5mm thick - verify clearance in the mounting bracket before ordering.
Confirm power supply: 10-30VDC, 3-wire connection (BN = +, BK = signal, BU = -).

📘 Need the full method? How to Choose a Proximity Sensor · NPN vs PNP Sensor Outputs Explained

When NOT to specify the Q10 — and what to use instead

Needing front/tip-facing sensing instead of side sensing

Why not: The Q10 series senses from the side face of the block, not the front tip, per the manufacturer's dimension drawing for this series.

Use instead: A front-sensing round barrel sensor (e.g. an M8/M12 tubular inductive model) or the Q17/Q18C square series, which sense from the front/side face.

Detecting plastic, liquid, or other non-metallic targets

Why not: The Q10 series is inductive, so it only responds to metal targets.

Use instead: A capacitive sensor such as the Q20 square capacitive switch or the RS series.

Switching a load directly above the rated output current

Why not: Maximum load current is rated at 150mA with a 180mA overload protection trip point, per the spec table.

Use instead: Route the load through an interposing relay or contactor rated above 150mA rather than driving it directly from the sensor output.

Needing more than 4mm sensing distance in a similar compact footprint

Why not: Sensing distance in this series is fixed at 2.5mm (Q102.5) or 4mm (Q104); there is no longer-range option in this body style.

Use instead: The Q17/Q18C series (5mm/8mm) or the Q25/Q30/Q40 series (10-20mm) for longer sensing distance.

Sensing aluminum, brass, or copper targets at the rated distance

Why not: No non-ferrous correction factor is published in the current spec table for this series.

Use instead: Confirm the correction factor with the factory before specifying for non-ferrous metal targets.

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.

Non-ferrous correction factor
MTBF (mean time between failures)
Cable length
Switching frequency / response time
Certification status (CE/UL/RoHS, etc.)

Frequently Asked Questions

What is the difference between Q102.5 and Q104?

Q102.5 has a 2.5mm sensing distance and an ABS housing (6mm thick); Q104 has a 4mm sensing distance and a PBT housing (6.5mm thick). Both share the same 10mm x 30mm footprint.

Where is the sensing face on the Q10 series?

The sensing face is on the side of the rectangular body, not the front tip - the product is labeled a side-sensing type in the manufacturer's dimension drawing.

What is the difference between NPN and PNP output on this switch?

NPN output switches the load to the negative (0V) supply line when triggered; PNP output switches the load to the positive supply line when triggered. Which one to choose depends on whether the connected PLC/control input is sinking or sourcing type.

What is the difference between the NO (1) and NC (2) output codes?

NO (normally open, suffix "1") output turns ON when a metal target is detected. NC (normally closed, suffix "2") output is ON by default and turns OFF when a metal target is detected.

What supply voltage and current does the Q10 series require?

The switch operates on 10-30VDC, with no-load current under 10mA and a maximum load current of 150mA.

Does the Q10 series have any built-in protection?

Yes - the output has short-circuit protection with an overload current protection point of 180mA.

What is the wire color code for the 3-wire cable?

Brown (BN) = positive supply, black (BK) = signal output, blue (BU) = negative supply - the standard color coding shown on the manufacturer's wiring diagram for NPN/NO, NPN/NC, PNP/NO, and PNP/NC configurations.

What is the ingress protection (IP) rating and operating temperature range?

The switch carries an IP67 ingress protection rating and is rated for an operating temperature of -25C to +70C.

Does the Q10 series have an LED status indicator?

Yes, it includes a built-in LED indicator for detection status.

What typical machine functions is the Q10 series used for?

Manufacturer application illustrations show it used for cam detection, metal pallet/fixture positioning on conveyors, and rotary turntable position detection. These are typical use cases for a compact side-sensing inductive switch, not case studies of specific end customers.

Can certification documents be provided for the Q10 series?

Certification documents are available on request.