The sensor housing using stainless steel, the output signal strength, interference performance, easy to install, can smoke, gas, water, gas and other harsh environments. 
 2. Technical parameters 
 2.1 DC Resistance: 200 ± 15Ω (25 ℃) 
 2.2 Speed ??Gear Type: Module 2 ~ 4 (involute gear) 
 2.3 Operating temperature: -10 ~ +120 ℃ 
 2.4 Anti-Vibration: 20g 
 2.5 thread sizes: Φ16 sensor (M16 × 1) 
 2.6 Weight: about 120g 
 2.7 Relationship between speed and output voltage (sensor and the gear gap is 0.8mm, the sensor output voltage peak to peak)