Product Overview
NOS Back-Up Alarm Switch Kit - Preco SWM43C, USA Made
Condition and Kit Contents
This is new old stock (NOS). The unit is unused and in original manufacturer packaging. No signs of prior installation. Limited stock available.
The kit includes the SWM43C switch body with threaded actuator rod, two adjustable slotted mounting brackets, a cord grip, a conduit connector, and mounting hardware (screws, washers, and nuts). All components are present for field installation without sourcing additional hardware.
Switch Overview
The Preco SWM43C is a mechanical back-up alarm switch for mobile and industrial equipment. It activates back-up alarms or related safety circuits when position or movement changes the switch state. The switch is rated at 5A for low-voltage alarm loads.
The contacts are field-configurable as normally open (NO) or normally closed (NC). This allows the switch to integrate with a range of existing alarm control schemes and OEM wiring configurations without requiring additional components. The actuator provides 360-degree mechanical movement, allowing installation in orientations where the trigger direction varies.
The housing is composite and water-resistant, suited for outdoor and vehicle-mounted use where moisture and debris are present. The adjustable slotted mounting brackets allow orientation and motion tuning during installation. The switch is CSA approved and UL recognized. It is manufactured in the USA.
Specifications
- Manufacturer: Preco
- Model: SWM43C (successor to SWM-43)
- Type: Mechanical back-up alarm switch
- Rating: 5A (low-voltage)
- Contacts: NO/NC field-configurable
- Actuator movement: 360-degree mechanical
- Housing: Water-resistant composite
- Certifications: CSA approved, UL recognized
- Origin: Made in the USA
- Condition: New Old Stock (NOS), unused, in original packaging
Applications
Suitable for back-up alarm activation on forklifts, material handling trucks, and construction equipment. Applicable for mobile machinery requiring position-based alarm triggering. Used in fleet maintenance, legacy system repair, OEM replacement, and new equipment builds requiring a mechanical motion switch.
Frequently Asked Questions
What is included in the kit?
The kit includes the SWM43C switch body with threaded actuator rod, two adjustable slotted mounting brackets, a cord grip, a conduit connector, and mounting hardware. All components needed for field installation are included.
Can the contacts be wired as NO or NC?
Yes. The contacts are field-configurable as normally open or normally closed. This allows the switch to work with a range of alarm control schemes without modification.
What is the condition of this unit?
New old stock (NOS). Unused in original manufacturer packaging. No signs of prior installation or use.
Is this switch CSA and UL certified?
Yes. The SWM43C is CSA approved and UL recognized for use as a low-voltage safety accessory.
What equipment typically uses this switch?
Forklifts, material handling trucks, construction machines, and mobile industrial equipment that use mechanical linkage or position-based signaling to trigger back-up alarms.
NOS Back-Up Alarm Switch Kit - Preco SWM43C, USA Made
Condition and Kit Contents
This is new old stock (NOS). The unit is unused and in original manufacturer packaging. No signs of prior installation. Limited stock available.
The kit includes the SWM43C switch body with threaded actuator rod, two adjustable slotted mounting brackets, a cord grip, a conduit connector, and mounting hardware (screws, washers, and nuts). All components are present for field installation without sourcing additional hardware.
Switch Overview
The Preco SWM43C is a mechanical back-up alarm switch for mobile and industrial equipment. It activates back-up alarms or related safety circuits when position or movement changes the switch state. The switch is rated at 5A for low-voltage alarm loads.
The SWM43C is the direct successor to the earlier Preco SWM-43, a model that earned a strong field reputation across decades of mobile and industrial equipment use. The functional difference between the two is in the housing: the original SWM-43 used a cast aluminum body, while the SWM43C uses a composite high-impact plastic enclosure. Both are built to the same demanding standards by Preco Engineering, a USA manufacturer that is no longer in production. The SWM43C is a direct drop-in replacement for SWM-43 applications in most installations.
The contacts are field-configurable as normally open (NO) or normally closed (NC). This allows the switch to integrate with a range of existing alarm control schemes and OEM wiring configurations without requiring additional components. The actuator provides 360-degree mechanical movement, allowing installation in orientations where the trigger direction varies.
The housing is composite and water-resistant, suited for outdoor and vehicle-mounted use where moisture and debris are present. The adjustable slotted mounting brackets allow orientation and motion tuning during installation. The switch is CSA approved and UL recognized. It is manufactured in the USA.
Specifications
- Manufacturer: Preco
- Model: SWM43C | Successor to Preco SWM-43 | Composite body vs. cast aluminum body of SWM-43
- Type: Mechanical back-up alarm switch
- Rating: 5A (low-voltage)
- Contacts: NO/NC field-configurable
- Actuator movement: 360-degree mechanical
- Housing: Water-resistant composite
- Certifications: CSA approved, UL recognized
- Origin: Made in the USA
- Condition: New Old Stock (NOS), unused, in original packaging
Applications
Suitable for back-up alarm activation on forklifts, material handling trucks, and construction equipment. Applicable for mobile machinery requiring position-based alarm triggering. Used in fleet maintenance, legacy system repair, OEM replacement, and new equipment builds requiring a mechanical motion switch.
Frequently Asked Questions
What is included in the kit?
The kit includes the SWM43C switch body with threaded actuator rod, two adjustable slotted mounting brackets, a cord grip, a conduit connector, and mounting hardware. All components needed for field installation are included.
Can the contacts be wired as NO or NC?
Yes. The contacts are field-configurable as normally open or normally closed. This allows the switch to work with a range of alarm control schemes without modification.
What is the condition of this unit?
New old stock (NOS). Unused in original manufacturer packaging. No signs of prior installation or use.
Is this switch CSA and UL certified?
Yes. The SWM43C is CSA approved and UL recognized for use as a low-voltage safety accessory.
What equipment typically uses this switch?
Forklifts, material handling trucks, construction machines, and mobile industrial equipment that use mechanical linkage or position-based signaling to trigger back-up alarms.
What is the difference between the SWM43C and the SWM-43?
The SWM43C is the successor model to the Preco SWM-43. The primary difference is the switch body: the SWM-43 used a cast aluminum housing, while the SWM43C uses a composite high-impact plastic housing. Both designs are built to the same functional standards and the SWM43C is a direct replacement in most SWM-43 applications. Both models were manufactured by Preco Engineering, a US company that is no longer in production. New old stock of either model is increasingly difficult to find.
Preco Engineering is gone, but their switches are still out there doing the job they were built for - keeping equipment, people, and jobsites safer one beep at a time. If you have been hunting for an SWM-43 and found this instead, consider yourself fortunate: same function, tougher polymer shell, and still made in the USA back when that meant something.
