What's in the box:

3.3V-12V 3-8A Low Pulse Trigger Board Flip-Flop Latchs Relay Module Bistable Self-Locking Switch (Multicolor)

Features:
Low pulse trigger board use high-quality electronic components.
Ensure durability through precise process.
This is a bistable (self-locking) relay module.
Willtrigger once the relay is pulled (and maintained); triggers again and releases (and maintains) the relay.
By default, relay release, press trigger button, relay pull, press again, relay release, third press, relay pull, etc.
For automotive electronics, industrial equipment, engines, emergency lighting, MCU development board, toy cars.

Specifications:
Material: PCB
Voltage: DC3.3-12V
Allowing output current:3A(3.3V-3.7V);5A(3.7V-5V);6A(5V-9V);8A(9V-12V)
Item weight: 6g / 0.21ounce
Package weight: 10g / 0.35ounce
Package size: 36 * 18 * 14mm / 1.42 * 0.71 * 0.55in

Packing List:
1 * Relay Module