Refrigeration Sensor Wire Assembly SW-W-32 — Moulded Probe Head & Tinned Leads for 12/24V Cab Coolers, RV Fridges and Reefer Bodies

SW-W-32 Vehicle Refrigeration Sensor Lead — The Cheapest Part That Decides Whether the Cargo Arrives Cold

In a refrigerated vehicle, the temperature sensor is the only part that actually knows what the cargo is seeing — and it is almost always the cheapest item in the box. When it drifts, the compressor short-cycles or runs long, box temperature walks off set point, and the first person to notice is the customer opening the door at the dock. The Snowwolf SW-W-32 is a refrigeration sensor wire assembly built for vehicle-mounted cooling: 12V/24V cab coolers, RV and camper refrigerators, reefer van and box-body units, and portable cold-chain boxes. One end is a moulded probe head with mounting feature; the other is multi-core leads, stripped and tinned, ready for the control board terminal.

Vehicle refrigeration is not a kitchen duty cycle. The probe lives next to a compressor that heat-soaks in summer sun, the lead runs through a body that flexes and vibrates for a hundred thousand kilometres, and the whole assembly meets road splash, washdown water and condensation that never fully dries. So the jacket and lead insulation are selected for low-temperature flexibility, moisture resistance and resistance to oil and fuel mist; the moulded head seals the sensing end — moisture ingress is precisely what shifts a reading quietly for months before the part fails outright; tinned copper leads keep the termination clean and solderable straight out of the bag; and lead length is built to your routing instead of being trimmed on the line.

One thing decides whether this part works in your build, and we would rather say it up front: a sensor lead is matched to a controller, not to a catalogue. Two probes that both read 10 kΩ at 25 °C will read differently at −18 °C if the B constant differs — same part looks, different temperature, same complaint from the end user. Give us R25, B constant, tolerance, lead length, core count and terminal type, or simply send the part number and drawing of the unit you are replacing, and we build and document it per lot. Lead length, core count, wire gauge, probe head type and terminal finish are all customizable.

The SW-W-32 is produced in our ISO/TS 16949-certified factory in Dongguan under a 1-year warranty. Orders start at 100 pieces at $4.50/piece FOB Shenzhen, 15–25 days delivery, L/C or T/T, private labeling available. Send your part number, resistance spec and lead length — quotation within 24 hours.

Key Advantages

✔ Built for the Box, Not the Kitchen:​ Jacket and insulation specified for cold-soak, moisture, vibration and oil mist — the four things a vehicle refrigeration compartment actually does to a lead.
✔ Moulded Head Seals the Sensing End:​ Moisture is what moves a reading before it kills a probe; the moulded body blocks it at the source, not with a taped joint.
✔ Tinned Leads, Line-Ready:​ Stripped and tinned from the bag — no re-prepping at your assembly station.
✔⭐Matched to Your Controller:​ R25, B constant, tolerance and length built to your drawing. A "compatible" probe with the wrong curve is not compatible — it is a warranty claim.
✔ Lot Consistency:​ Built and documented per lot, so the compressor logic you validated in the prototype stays valid in production.
✔⭐Vehicle Electrical Environment:​ Leads and insulation specified for 12/24V DC control circuits; tell us the transient or EMC level you need documented and we test to that level — we do not print a compliance mark we have not measured.
✔ Wholesale-Ready:​ MOQ 100 pcs at $4.50/pc, 15–25 day delivery, L/C or T/T, private label supported.

Product Attributes

FAQ

Q1: Is this a complete sensor, or just the lead?​
Depends on the SKU — send the part number or a photo of the old part and we confirm whether it is a full assembly with the NTC element or a connecting lead, then match it item by item.

Q2: My fridge is 24V truck cab unit — is the lead rated for that?​
Yes, leads and insulation are specified for 12/24V DC control circuits. Tell us if you need ISO 7637-2 transient or ECE R10 related test documentation and we test to the level you specify.

Q3: Will it survive vibration and washdown on a reefer body?​
The moulded head seals the sensing end and the assembly is built for vibration and moisture; give us your IP and vibration requirement and we build and verify against it rather than quote a rating we have not measured.

Q4: Can I get a specific probe length for my routing?​
Yes — lead length, core count, wire gauge, probe head type and terminal finish are built to your drawing.