Siemens Humidity Sensor
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![Siemens QFM81.2 Duct Hygrostat with External Setpoint, 30 - 90% RH | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/QFM81.2_medium.jpg?v=1713810628)
QFM81.2 | Duct Hygrostat with External Setpoint, 30 - 90% RH | Siemens
Brand: Siemens
SKU: QFM81.2
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![Siemens QFM3160 Duct RH and Temp Sensor, 2 percent (high) accuracy, RH: 0-10 Vdc, T: 0-10 Vdc | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/QFM3160_medium.jpg?v=1692723024)
QFM3160 | Duct RH and Temp Sensor, 2 percent (high) accuracy, RH: 0-10 Vdc, T: 0-10 Vdc | Siemens
Brand: Siemens
SKU: QFM3160
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![Siemens QFM3100 Duct Relative Humidity Temperature Sensor, 2 percent accuracy, 0-10 Vdc | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/QFM3100_medium.jpg?v=1692722984)
QFM3100 | Duct Relative Humidity Temperature Sensor, 2 percent accuracy, 0-10 Vdc | Siemens
Brand: Siemens
SKU: QFM3100
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![Siemens QFM3101 Duct Relative Humidity Sensor, 2 percent accuracy, 4-20 mA | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/QFM3101_medium.jpg?v=1692722967)
QFM3101 | Duct Relative Humidity Sensor, 2 percent accuracy, 4-20 mA | Siemens
Brand: Siemens
SKU: QFM3101
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![Siemens QFM2160U Duct RH and Temp Sensor, 5 percent accuracy, RH: 0-10 Vdc, T: 0-10 Vdc | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/QFM2160U_5726d4f7-da54-4719-b761-c5672693d659_medium.jpg?v=1706652092)
QFM2160U | Duct RH and Temp Sensor, 5 percent accuracy, RH: 0-10 Vdc, T: 0-10 Vdc | Siemens
Brand: Siemens
SKU: QFM2160U
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![Siemens QFM2100 Duct Relative Humidity Sensor, 5 percent accuracy, 0-10 Vdc | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/QFM2100_50f041d8-a48d-493e-a10e-299e6ac09456_medium.jpg?v=1709073183)
QFM2100 | Duct Relative Humidity Sensor, 5 percent accuracy, 0-10 Vdc | Siemens
Brand: Siemens
SKU: QFM2100
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![Siemens QFM2101 Duct Relative Humidity Temperature Sensor, 5 percent accuracy, 4-20 mA | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/QFM2101_medium.jpg?v=1692723002)
QFM2101 | Duct Relative Humidity Temperature Sensor, 5 percent accuracy, 4-20 mA | Siemens
Brand: Siemens
SKU: QFM2101
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![Siemens QFM3171D DUCT RH & TMP SNSR, 4-20mA, 2%, DISPLAY | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/QFM3171D_medium.jpg?v=1692723028)
QFM3171D | DUCT RH & TMP SNSR, 4-20mA, 2%, DISPLAY | Siemens
Brand: Siemens
SKU: QFM3171D
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![Siemens QFA2001 ROOM RH SENSOR, 4-20MA, 2 WIRE, 5% | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/QFA2001_medium.jpg?v=1692722985)
QFA2001 | ROOM RH SENSOR, 4-20MA, 2 WIRE, 5% | Siemens
Brand: Siemens
SKU: QFA2001
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![Siemens QFM3171 Duct RH and Temp Sensor, 2 percent (high) accuracy, RH: 4-20 4 T: 4-20 mA | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/QFM3171_medium.jpg?v=1708621550)
QFM3171 | Duct RH and Temp Sensor, 2 percent (high) accuracy, RH: 4-20 4 T: 4-20 mA | Siemens
Brand: Siemens
SKU: QFM3171
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![Siemens QFM2171 Duct RH and Temp Sensor, 5 percent accuracy, RH: 4-20 4 to 20 Ma T: 4-20 mA | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/QFM2171_medium.jpg?v=1692722956)
QFM2171 | Duct RH and Temp Sensor, 5 percent accuracy, RH: 4-20 4 to 20 Ma T: 4-20 mA | Siemens
Brand: Siemens
SKU: QFM2171
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![Siemens QFA1000 Room Hygrostat, 30 to 90% RH | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/QFA1000_dae712e1-7d4f-49fd-a75e-931967976dc6_medium.jpg?v=1715960129)
QFA1000 | Room Hygrostat, 30 to 90% RH | Siemens (OBSOLETE)
Brand: Siemens
SKU: QFA1000
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![Siemens QFM2120 Duct RH and Temp Sensor, 5 percent, RH: 0-10 Vdc, T: 1K ohm Nickel | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/QFM2120_medium.jpg?v=1692722962)
QFM2120 | Duct RH and Temp Sensor, 5 percent, RH: 0-10 Vdc, T: 1K ohm Nickel | Siemens
Brand: Siemens
SKU: QFM2120
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![Siemens QFA1001 Room Hygrostat with External Setpoint, 30 - 90% RH | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/QFA1001_5dfaf44b-8493-4fb1-9cc9-698a578de30f_medium.jpg?v=1715960125)
QFA1001 | Room Hygrostat with External Setpoint, 30 - 90% RH | Siemens (OBSOLETE)
Brand: Siemens
SKU: QFA1001
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![Siemens QFM81.21 Duct Hygrostat, 30 to 90% RH | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/QFM81.21_medium.jpg?v=1692723004)
QFM81.21 | Duct Hygrostat, 30 to 90% RH | Siemens
Brand: Siemens
SKU: QFM81.21
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![Siemens QFM4171 Duct RH and Temp Sensor, 2 percent certified, RH: 4-20 mA T: 4-20 mA | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/QFM4171_medium.jpg?v=1692723020)
QFM4171 | Duct RH and Temp Sensor, 2 percent certified, RH: 4-20 mA T: 4-20 mA | Siemens
Brand: Siemens
SKU: QFM4171
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![Siemens QFM4160 Duct RH and Temp Sensor, 2 percent certified, RH: 0-10 Vdc, T: 0-10 Vdc | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/QFM4160_medium.jpg?v=1692722966)
QFM4160 | Duct RH and Temp Sensor, 2 percent certified, RH: 0-10 Vdc, T: 0-10 Vdc | Siemens
Brand: Siemens
SKU: QFM4160
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![Siemens QFM3160D DUCT RH & TMP SNSR, 0-10V, 2%, DISPLAY | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/products/QFM3160D_medium.jpg?v=1692722996)
QFM3160D | DUCT RH & TMP SNSR, 0-10V, 2%, DISPLAY | Siemens
Brand: Siemens
SKU: QFM3160D
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