Heat Shrink Sleeve Tube - 4mm Diameter - Red - 1 meter [C] Optocoupler Relays are most commonly used

Relays are most commonly used switching devices used in electronics

Diameter: 10 inches / 25

CTR  :  60% at IF=10mA

To ensure a stable and reliable power supply

Features: Double slot 18650 Battery Cell Holder

Heat Shrink Sleeve Tube - 4mm Diameter - Red - 1 meter [C] Optocoupler Relays are most commonly usedHeat Shrink Tube is required when you want to build your wiring harness to be resistant to abrasion, scrubbing and provide insulation to stranded and solid wire conductors, joints, connectors and terminals in the electrical systems. It is a plastic tube which shrinks rapidly when exposed to heat which can be given by a heat gun or even a lighter though not recommended! It tightens around a conductor to keep it firmly in place and restrict its