特价302-epm-194感温棒供应所有302系列的探测器都是常开的系统,有135华氏度(57摄氏度)和194华氏度(90摄氏度)两种定温度等级。 All 302 Series Detectors are normally open devices and are available in either 135°F (57°C) or 194°F (90°C) ratings. Each unit is c**tructed with a high expansion .040 anodized aluminum (氧化铝)sensing shell and fine silver contacts which are hermetically sealed to ensure reliable operation. Electrical Rating (额定电功率)6-28 VDC, 1 amp. (all models) 302-135- Interior, Vertical Mounting Fixed Temperature 135°F Maximum Spacing - UL 50'' x 50'' 302-194 - Interior, Vertical Mounting Fixed Temperature 194°F Maximum Spacing - UL 50'' x 50'' 这款应该是室内使用 302-ET-135 - All Weather, Vertical Mounting Fixed Temperature 135°F Maximum Spacing - UL 50'' x 50'' 302-All Weather, Vertical Mounting Fixed Temperature 194°F Maximum Spacing - UL 50'' x 50'' 这款是所有的环境使用 .大发机电设备|||特价302-epm-194感温棒供应