Single-Gas Detector Replaceable Battery No Product Type Single-Gas Detector Display Screen Type LCD Includes Probe No Housing Color Orange Gas Detected Ammonia Communication Protocol PC-Compatible Interface USB Series PM100 Sub-Brand AimSafety Battery Size 3.6V Operating Humidity - Maximum 95 Percent Resistance Properties Water Resistant Operating Humidity - Minimum 5 Percent Temperature Code T4 Alarm Volume Level 90 dB @ 4 in