It can be used for machine safety. it is a signaling flashing warning lamp. it works with 220v. the lights can be directed independently of each other. (each of them can be lit individually or all three of them. the lights are in two stages. i) steady ii) flashing maximum 50 pieces of this product can be ordered. swordslife reserves the right to cancel orders over 50 pieces. there is less than 5 stocks to be sold at the campaign price. the seller determines the selling price of the product you have examined. Improved version for clearer understanding and better search visibility. Suitable for users seeking detailed and reliable product information.