Relay Auduino 2-channel 24V relay module low-level trigger, photocoupler isolation spot Steuermodul 【Size】 50.5 x 38.5 x 18.5 mm (Length x Width x Height) Weight: 31 grams PCB color: Black There are four fixed screw holes around the board, and the hole diameter is 3.1 mm, which is convenient for installation and fixing. The relay has a common end, a normally open end, and a normally closed end. ★ We do not have detailed knowledge of this product, so please understand that we cannot answer any questions. 〜❉〜❉〜❉〜 ⭐ Immediate purchase welcome! ⭐ Midnight silent purchase OK! ⭐ Free shipping! ✼ If you let us know in the comments that you have followed us, we will give you a 100 yen discount on items over 1,000 yen! Although unopened, it has been photographed, so it is listed as "Like new". 7-35 #Yocco'sVariousProducts #DIY・PartsList