Your cart is empty.
Your cart is empty.Product Description
Haldzemo SN04 Inductive Proximity Sensor
Proximity switch definition:
An inductive proximity switch consists of high frequency oscillation, detection, amplification, triggering and output circuits. The oscillator generates an alternating magnetic field on the detecting surface. When there is a metal object close to its detecting surface, the eddy current generated in the metal absorbs the energy of the oscillator, which makes it weaken to stop oscillating. The oscillator oscillation and stop vibration of these two states is converted into an electrical signal through the detection, amplification and trigger output circuit.
Difference between normally open (NO) and normally closed (NC):
Normally open (NO) is the usual state of the signal output line is disconnected state, no signal output, when sensed to the object is closed, the output signal.
Normally closed (NC) is the usual state of the signal output line for the closed state, continuous signal output, when the sense of the object is disconnected, close the signal.
LED working indicator:
signal indicator, when sensing metal objects the light is on for normally open, the light is off for normally closed.
Square proximity switch
- Model: SN04
- Detected object: Metal/Iron
- Detection distance: 4mm
- Working voltage: within DC 5-30V
- Wire type: 3 wire (Brown, Black, Blue)
- Shell Material: ABS
- Output current: 300mA
- Response time: 2mS
Application:
The function of proximity switches (also known as non-contact travel switches) is to act when approaching metal, and are widely used in machine tools, metallurgy, chemical industry, light textile and printing industries, in the automatic control system can be used as limit, counting, positioning control and automatic protection link, etc..
SN04 Proximity Switch
Shape: Square
Size: 18*18*36mm
Weight: 50g
Color: Blue
Wire length: 1.2m
SN Bracket
Size: 32*18*8.5mm
Weight: 15g
Color: Silvery
With 2pcs M3 screws
Wiring Method
Brown connect to Positive
Blue connect to Negative
Black connect to Load (signal output)
NPN NO
Mode: SN04-N
Output Type: NPN NO
PNP NO
Mode: SN04-P
Output Type: PNP NO
NPN NC
Mode: SN04-N2
Output Type: NPN NC
PNP NC
Mode: SN04-P2
Output Type: PNP NC
Emily Hovestadt
Reviewed in the United States on January 3, 2025
very happy with product
kubota fan
Reviewed in the United States on January 16, 2025
looks really good, nice quality switch
Miiu Casillas
Reviewed in the United States on July 10, 2024
The functionality is perfect and very good quality (screws included) I don't give 5 stars because it says it's a set of 4 and only 2 arrived. I tried to claim it but couldn't find the option to talk to the seller.
James D.
Reviewed in the United States on March 8, 2024
The repeatability is very good with these, standard mounting pattern, clearly marked and they have a nice visible indicator. Make sure you get the right kind, these ones trigger on approach detect, if you need to invert that signal then grab the other type or use an inverter if you can deal with delay added by the extra step. The devices are fully potted in epoxy and include a sturdy mounting bracket for distance adjustment.
Ken H.
Reviewed in the United States on February 23, 2024
1 out of 4 failed within a few days, the rest seem to be working fine. I had purchased another set from overseas and they too had a 20% failure rate. I am glad I purchased extras for spares.
Recommended Products