555 flammable gas alarm circuit

Crystal oscillator
Industrial Router Crystal 3.2*2.5mm 3225 26M (26.000MHZ) 12PF 10PPM 20PPM 30PPM
Photocoupler


NE55578127815



Background Support System

Background support system

Just install a piece of Background Cloth on this background support system to turn an empty wall into an amazing scene. Make sure your muslin, paper or canvas background is firmly fixed. Comes with a carrying case for easy carrying.

Height and width adjustment

This background support system with four cross bars can easily adjust the height and width, so it can adapt to different sizes of background. A convenience suit for photographers shooting at parties, ceremonies or other occasions.

Stable support and background

Made of durable aluminum alloy, the background support system is stable enough. Two empty sandbags are included to increase stability, especially in windy conditions. Use strong spring clips to ensure that the background is fixed in place.

Easy to install

The assembly process takes only a few minutes - just turn the adjustment knob and wing on the bracket to easily and quickly expand the background bracket and install the cross bar to hang your background.

Adjustable Backdrop Stand,Background Support System,Backdrop Support System,Photography Backdrop System

shaoxing shangyu Tianya Photographic Equipment Factory , https://www.tianyafoto.com