The Hanpusen TR90 Digital Timer Remote Control Power Switch is a black remote switch designed for flash lighting systems. It is powered by 1.5V batteries and has a compact design, making it easy to handle and store. With only 8 oz of item weight, this remote switch is lightweight and portable for on-the-go use. Made in China by the trusted brand Hanpusen, this remote control switch is a reliable tool for controlling your flash lighting setup with precision and ease.