Features: 1) Max. operating voltage: DC 36V 2) Operating voltage: DC 18 - 24V 3) Sensitivity: 0.5 - 1.23% ft 4) Current consumption (normal state): 390uA (common), 540uA(max) 5) Operating temperature: -10 - 50 C 6) Storage temperature: -20 - 60 C 7) Size: 105 x 50mm 8) Operating environment: indoor only 9) Polarity: none