uxcell 4mm Inductive Proximity Sensor Switch Detector NPN NC DC 5-30V 200mA 3-Wire SN04-N2 Country of Manufacture: CHINA; Material: Brass, Nickel Plated, ABS; Net Weight: 53g; Package Content: 1 x Inductive Proximity Switch Model: SN04-N2; Main Color: Green, Black; Switch Size: 35.8 x 18 x 18mm / 1.41" x 0.71" x 0.71" (L*W*H); Product Name: Inductive Proximity Switch Wire Type: DC 3 Wire Type (Black, Brown, Blue); Switch Appearance Type: Square Type; Theory: Inductive Sensor; Output Type: NPN NC(Normal Close) Detecting Distance: 4mm; Supply Voltage: DC 5-30V; Current Output: 200mA; Detect Object: Iron Operating Temperature: -25C to +65C (Non-freezing Condition); Cable Length: 2M / 6.6ft; Action Display: LED