YASONG 4-Tier LED Andon Stack Tower Light, Self-Locking Switch, Flash/Steady Mode, Sound Optional, IP65 Sound:With sound RS-485 communication protocol control and

RS-485 communication protocol control and LED strobe warning light for factories

100m / 320ft infrared detection distance for outdoor perimeter security

IP rating：IP65 Waterproof and Dustproof

LED strobe warning light and a rechargeable lithium battery for temporary outdoor warning use

12 built-in tones switchable by long-press button

YASONG 4-Tier LED Andon Stack Tower Light, Self-Locking Switch, Flash/Steady Mode, Sound Optional, IP65 Sound:With sound RS-485 communication protocol control andThe YASONG 4 tier LED Andon stack tower light combines red, yellow, green and blue signal lights, self locking switch control and flash or steady on lighting modes for CNC machines, textile machinery, machining centers, automated production lines, laser equipment and automated warehouses. This model uses a plug and play switch control box, so no wiring is required for normal use. Each color button controls the corresponding tower light layer, making