Curtis | 3501 Manual _hot_

: Equipped with four digital inputs and one 1.0 AMP MOSFET output.

Check for improper voltage or disconnected terminals at the B+ and B- pins. Lockout Reset: curtis 3501 manual

Modern Curtis controllers use LED flash codes to communicate errors. The manual provides the legend for these codes. For example: : Equipped with four digital inputs and one 1

For detailed setup, users often refer to the enGage IV Manual as the menu structures are similar across the series: The manual provides the legend for these codes

Uses a 16-pin TYCO Mini Universal Mate-N-Lok main connector. Pin Assignments: Pin 3 & 4: CAN_L and CAN_L Termination. Pin 7: KSI (Keyswitch Input). Pin 8: MOSFET Output.

: The device can track multiple maintenance monitors (MM 1, MM 2, MM 3) to notify operators when service is due.

The Curtis 3501 is often confused with Curtis Instruments’ battery gauges (like the 3501 Curtis LCD battery discharge indicator for forklifts/golf carts). If your device is actually a multimeter , make sure to clarify that in your post. If it’s the battery indicator , try searching for: “Curtis 3501 battery gauge manual” or “Curtis 900R manual” (related series).