Cole Hersee Voltage Sensing Relay and Timer with 12805 Harness - Boxed - 48541-01

Cole Hersee

Request Quote
0.50 LBS
Special Order Available:
Increments of 1

The Cole Hersee FlexMod Voltage Sensing Relay and Timer 48541-01-BX monitors both battery voltage and ignition status, shutting down non-critical loads when the cutoff voltage is reached, or at the set time after the ignition is turned off. It is a timer and voltage sensor in one easy-to- connect unit.

Ideal for use in emergency vehicles, the unit senses both voltage and time; after the vehicle engine is turned off, if  either the cutoff voltage or time limit is reached, the Voltage Sensing Relay & Timer FlexMod will shut down the auxiliary loads. The dual technology in package provides double protection.


  • Compact design (4” x 3” x 1”) unit is waterproof, dustproof and vibration-proof.  Mounts anywhere on a vehicle, even places where road-splash is a problem. Sealed to IP67 standard. 
  • Preserves starting power; eliminates downtime and jump starts due to dead batteries. Simultaneous time and voltage sensing protects starting, even when the vehicle is running "in deficit".
  • Monitors voltage and time simultaneously, providing double the protection to batteries. Battery will not be  drained if battery voltage gets low before timer has run out.  
  • 10A rating means it can handle many loads directly or drive a relay or solenoid for higher amperage
  • Unit is autoranging - senses 12 Vdc or 24 Vdc systems


  • Cole Hersee Part No.: 48541-01-BX
  • Package Type: Boxed
  • Series: FlexMod Voltage Sensing Relays & Timers
  • Description: Voltage Sensing Relay and Timer with 12805 Harness

Product Condition: NEW

Shop Products

Services Beyond Parts

Purchasing and Sourcing Purchasing and Sourcing

Find the right part, material from our huge global network of resources.

Learn More
Solutions and Capabilities Solutions and Capabilities

Need help solving a problem, prototyping a solution or some other specialized skills.

Learn More
Engineering Solutions

Reverse engineering, 3D modeling, testing and part improvement expertise.

Learn More
Wholesale Accounts Wholesale Accounts

Leverage buying power, gain industry insight and stay connected at a large scale.

Learn More
“More than just a parts website. The account manager helped us plan ahead with inventory so we could avoid disruptions with our production schedule. Their engineering resources were available to assist with our application requirements. Highly recommend this team!”
— Satisified Customer


Talk to an Expert Account Manager who can help support your business.

Get Details