Check the listing for details. Spider Latching 12VDC DPDT Relay Module / Panel Mounted / Pulse Trigger / LED. Condition: New. Listed at 14.95 USD. Panel Mounted Latching DPDT Relay Module Module operates @ 12VDC, current draw 25mA nominal / 100mA peak. Voltage Input wires in at Terminal Block P1 / Pins 1 & 2 Normal state: Green LED is lit up. Relay Outputs P2 and P3 are de-energized. How to trigger: a. At Terminal Block P4 / Pins 3 & 4: A pulsed short-circuit signal triggers the module. When triggered: a. Red LED lights up, indicating triggered status. Will stay on in latched state. b. Both Terminal Blocks P2 and P3 "Form C" Relays will simultaneously activate and remain latched (Each relay is rated at 220 Volts AC/DC @ 2 Amps) Resetting instructions, (Note: P4 / Pins 3 & 4 must no longer be shorted): a. To perform an electronic reset- At terminal P4 / Pins 3 & 4: A pulsed short-circuit signal resets the module. b. To perform a manual reset- Monentarily push the square red on-board pushbutton Terminal Block P5 can be ignored and do not need to be used (they are optional connections for auxiliary puroposes) Dimensions: 2.83"x2.60"x1.00" Free shipping to lower 48 US StatesPayPal/Visa/MC Payments Only