Check the listing for details. 24V 4CH Toggle/ Delay Dip Switch Relay Flip-Flop Bistable Self-locking Trigger. Condition: New. Listed at 7.89 USD. Product Name: 4CH DC 24V DIP Switch Delay Relay Module Flip-Flop Latch Bistable Self-locking Interlock Latch Power Conditioner Package inlcuded: 1 PCS IO26G04 DC 24V 4ch Dip Switch relay module Product Specifications: 1 Operating voltage: DC 24V 2 Operating Current(DC 12V) : Standby current 4MA, 1 relay open 32MA, 2 relays open 59MA, 3 relays open 86MA, 4 relays open 114MA; 3 Size: 68 x 53.5 x 20 mm 4 Weight : 58g 5 Relay maximum load capacity: DC 1-110V/5A; AC 85-265V/6A Product Features: 4 channel relay, each channel independently triggered independent delay, do not interfere with each other. 4 kinds of Functional mode: Delay/ Non-locking (Momentary ); Self-locking (Toggle); Inter-locking (Latch); Power sequencer(Relay sequence opens) Low pulse trigger(Connect to the power supply GND via the trigger button or low level control via the MCU IO port) The function mode and delay time are selected by the DIP switch. Noun resolved: NO : Relay normally open contact COM : Relay common contact NC : Relay normally closed contact Relay open: COM connect NO. Relay close: COM disconnect NO. Typical applications: Automotive electronics AC DC Motor Audio amplifier Sequential power up. Power Conditioner/Sequencer LED Smart Home Emergency lighting MCU development board Toy car UNO MEGA2560 Car delay power off function how to use: Select the desired function mode and delay time via the DIP switch on the board. Note: Re-power up after changing the Dip switch Wiring diagram: 1 DC 12V Control circuit,Wiring diagram below. LOAD may be LED lights, fans, toy car and other DC 12V equipment 2 DC 1-100V OR AC 85-265V control circuit,Wiring diagram below. LOAD may be LED lights, fans, motors and other DC AC equipment