IFM IFS/IGS/IIS/IES Series Inductive Proximity Sensor Switch

Inductive Proximity Sensor Switch, Proximity Sensor Switch, Sensor SwitchIFM

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2025/7/4 Update

Cylindrical proximity switch M12, M18, M30
— Body length 40 to 60 mm, all-new bright LEDs offer excellent visibility from all directions.

IFM IFS/IGS/IIS/IES Series Inductive Proximity Sensor Switch

Technical Features

Extended sensing range reduces failures caused by mechanical damage and extends uptime.

K=1 sensor technology, with the same sensing range for all target materials.

Wide operating temperature range of -40…85°C, flexible application.

Rugged industry-standard housing with a protection rating up to IP68 / IP69K, can be reliably used in environments containing oil and coolants.

Bright LEDs provide 360-degree visible status indication for easier troubleshooting.

Products + Accessories Selection:

Dimensions Short (mm)	Dimensions Long (mm)	Sensing range	No. of wires	Output function	Switching frequency (Hz)	Order No. Short	Order No. Long
M12 / L = 40	M12 / L = 60	4 mm, Flush	3	DC PNP, N.O.	700	IFS256	IFS252
M12 / L = 40	M12 / L = 60	7 mm, Non-flush	3	DC PNP, N.O.	700	IFS257	IFS253
M12 / L = 40	M12 / L = 60	4 mm, Flush	3	DC NPN, N.O.	700	IFS258	IFS254
M12 / L = 40	M12 / L = 60	7 mm, Non-flush	3	DC NPN, N.O.	700	IFS259	IFS255
M18 / L = 40	M18 / L = 60	8 mm, Flush	3	DC PNP, N.O.	400	IGS248	IGS244
M18 / L = 40	M18 / L = 60	12 mm, Non-flush	3	DC PNP, N.O.	300	IGS249	IGS245
M18 / L = 40	M18 / L = 60	8 mm, Flush	3	DC NPN, N.O.	400	IGS250	IGS246
M18 / L = 40	M18 / L = 60	12 mm, Non-flush	3	DC NPN, N.O.	300	IGS251	IGS247
M30 / L = 45	M30 / L = 60	15 mm, Flush	3	DC PNP, N.O.	100	IIS242	IIS238
M30 / L = 45	M30 / L = 60	22 mm, Non-flush	3	DC PNP, N.O.	100	IIS243	IIS239
M30 / L = 45	M30 / L = 60	15 mm, Flush	3	DC NPN, N.O.	100	IIS244	IIS240
M30 / L = 45	M30 / L = 60	22 mm, Non-flush	3	DC NPN, N.O.	100	IIS245	IIS241
Correction factor K=1 + new technology
New! M8 / L = 37.5	–	3 mm, Flush	3	DC PNP, N.O.	2000	IE5202	–
New! M8 / L = 37.5	–	6 mm, Non-flush	3	DC PNP, N.O.	2000	IE5203	–
New! M8 / L = 37.5	–	3 mm, Flush	3	DC NPN, N.O.	2000	IE5208	–
New! M8 / L = 37.5	–	6 mm, Non-flush	3	DC NPN, N.O.	2000	IE5209	–
Note: We also offer PNP N.C. and NPN N.C. versions.

Optional accessories

Description	Order No.
Clamp, for 12 mm proximity switch	E11047
Clamp, for 18 mm proximity switch	E11048
Clamp, for 30 mm proximity switch	E11049
L-bracket, for 8 mm proximity switch	E10734
L-bracket, for 12 mm proximity switch	E10735
L-bracket, for 18 mm proximity switch	E10736
L-bracket, for 30 mm proximity switch	E10737

Specifications:

Operating voltage: 10…30 VDC
Protection rating: IP65, IP67, IP68, IP69K
Temperature: -40…85 °C
Leakage current: Negligible
Housing material:
- White bronze-plated brass; Sensing face: PBT (orange), PEI
- Exception models IES202, IES203, IES208, IES209: 316 Stainless steel
- Sensing face: LCP (white)
Electrical connection: 2 m cable, PUR
Max. load current: 100 mA

Comparison of sensing ranges with non flush proximity switches 2

Benefits introduce In Detail

Pre-wired proximity switches with an extended sensing range can reduce failures caused by mechanical damage.

ifm’s pre-wired inductive proximity switches perfectly combine function, performance, and value. They use a unique, patented design with smaller temperature drift and a wider operating temperature range. The sensing range tolerance can be improved to ±5%.

These proximity switches are resistant to shock, vibration, and electrical noise. With a protection rating up to IP68/IP69K, they can prevent water ingress and withstand oil and coolants in harsh applications.

ifm’s all-new proximity switches have an extended temperature range and can be installed further away from the target, thereby preventing damage from physical impact.

New! ifm’s small M8 diameter proximity switches use correction factor K=1 (K=1) sensor technology. Depending on the target material, standard proximity switches have a sensing range correction factor. For example, the sensing range for an aluminum target is 60% smaller than for a low-carbon steel target. Proximity switches using K=1 technology have the same correction factor for all metals. These proximity switches have the same sensing distance for both aluminum and low-carbon steel targets.