Arduino-Compatible MOS Driving Module Specifications Operating voltage: 3 to 5 VDC Max. load voltage: 0 to 24 VDC Input: SIG pin, logic level 3 to 5 VDC 1 A) Used MOSFET : IRF520 Dimensions: 1.34" x 0.83" x 0.63" (34 x 21 x 16 mm) Difficulty: Level 3 (intermediate)