Overview
An electronic circuit component used in 12V automotive, marine, and DIY electronics to control when a device turns on or off. In car audio and custom electrical setups, these modules are primarily used to prevent “turn-on pop” (loud speaker thumps caused by an amplifier powering up before the audio source) or to keep accessories running for a set period after the ignition is switched off.
Specifications
Operating Voltage: 12V DC nominal. Allows you to tune the delay time, ranging from fractions of a second (to fix amp pops) up to hours (for delayed accessory shutdown). This is adjusted via an on-board dial (potentiometer) or digital screen. Most standard modules handle between 10A and 30A. If you are controlling a high-draw device like a cooling fan, you will need a high-amp relay.
Key features
Usually 12V DC for automotive/marine use, or 5V/24V/110V for industrial applications. Current Capacity (Amperage): Most standard modules handle between 10A and 30A. If you are controlling a high-draw device like a cooling fan, you will need a high-amp relay. Adjustment Range: Allows you to tune the delay time, ranging from fractions of a second (to fix amp pops) up to hours (for delayed accessory shutdown). This is adjusted via an on-board dial (potentiometer) or digital screen.