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Welcome to ACI Products! We offer over 6000 products, such as CO and NO2 sensors, current switches, temperature and humidity monitors, and more.
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![ACI A/50K-RA-24"-PB 50,000 Ohm Thermistor, Rigid Probe Averaging, 24", Plastic Enclosure | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-1k-ni-d-12-bb_6a6300fd-68b7-459c-ac5d-dcfbf812b959_medium.png?v=1719981809)
A / 50K-RA-24"-PB | 50, 000 Ohm Thermistor, Rigid Probe Averaging, 24", Plastic Enclosure | ACI
Brand: ACI
SKU: A/50K-RA-24"-PB
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![ACI A/50K-A-50'-PB 50,000 Ohm Thermistor, Copper Averaging, 50', Plastic Enclosure | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-1k-ni-a-12-bb_5c402802-a4fc-4ac7-a377-371030ed2e6d_medium.png?v=1719981795)
A / 50K-A-50'-PB | 50, 000 Ohm Thermistor, Copper Averaging, 50', Plastic Enclosure | ACI
Brand: ACI
SKU: A/50K-A-50'-PB
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![ACI A/50K-RA-18"-PB 50,000 Ohm Thermistor, Rigid Probe Averaging, 18", Plastic Enclosure | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-1k-ni-d-12-bb_65775ef6-0903-420c-9088-bb0aabb2e9a9_medium.png?v=1719981771)
A / 50K-RA-18"-PB | 50, 000 Ohm Thermistor, Rigid Probe Averaging, 18", Plastic Enclosure | ACI
Brand: ACI
SKU: A/50K-RA-18"-PB
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![ACI A/50K-RA-12"-PB 50,000 Ohm Thermistor, Rigid Probe Averaging, 12", Plastic Enclosure | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-1k-ni-d-12-bb_ccd0d7df-e347-4061-a8bb-6eec38c5b1ec_medium.png?v=1719981818)
A / 50K-RA-12"-PB | 50, 000 Ohm Thermistor, Rigid Probe Averaging, 12", Plastic Enclosure | ACI
Brand: ACI
SKU: A/50K-RA-12"-PB
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![ACI A/50K-A-12'-PB 50,000 Ohm Thermistor, Copper Averaging, 12', Plastic Enclosure | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-1k-ni-a-12-bb_c1f5e63b-b245-4e39-b2db-2f6846c28a14_medium.png?v=1719981814)
A / 50K-A-12'-PB | 50, 000 Ohm Thermistor, Copper Averaging, 12', Plastic Enclosure | ACI
Brand: ACI
SKU: A/50K-A-12'-PB
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![ACI A/50K-PO-18" 50,000 Ohm Thermistor, Probe Only, 18" | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-0-1cp-po-4_b2ee8575-d51b-4e9e-8bbe-ab5030a2f46f_medium.jpg?v=1719981804)
A / 50K-PO-18" | 50, 000 Ohm Thermistor, Probe Only, 18" | ACI
Brand: ACI
SKU: A/50K-PO-18"
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![ACI A/50K-A-8'-PB 50,000 Ohm Thermistor, Copper Averaging, 8', Plastic Enclosure | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-1k-ni-a-12-bb_d01a9029-4bbd-4084-80c8-a10214f3d903_medium.png?v=1719981796)
A / 50K-A-8'-PB | 50, 000 Ohm Thermistor, Copper Averaging, 8', Plastic Enclosure | ACI
Brand: ACI
SKU: A/50K-A-8'-PB
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![ACI A/50K-PO-12" 50,000 Ohm Thermistor, Probe Only, 12" | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-0-1cp-po-4_a9536fe1-9afc-4369-b412-025514d8bf8d_medium.jpg?v=1719981810)
A / 50K-PO-12" | 50, 000 Ohm Thermistor, Probe Only, 12" | ACI
Brand: ACI
SKU: A/50K-PO-12"
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![ACI A/50K-RA-36"-GD 50,000 Ohm Thermistor, Rigid Probe Averaging, 36", Galvanized Enclosure | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-tt1k-d-18-4-gd_fef4b490-8477-4e39-aae8-901be27dd8e2_medium.png?v=1719981814)
A / 50K-RA-36"-GD | 50, 000 Ohm Thermistor, Rigid Probe Averaging, 36", Galvanized Enclosure | ACI
Brand: ACI
SKU: A/50K-RA-36"-GD
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![ACI A/50K-PO-6" 50,000 Ohm Thermistor, Probe Only, 6" | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-0-1cp-po-4_6ed1488a-82ff-4b88-8927-537565be6889_medium.jpg?v=1719981780)
A / 50K-PO-6" | 50, 000 Ohm Thermistor, Probe Only, 6" | ACI
Brand: ACI
SKU: A/50K-PO-6"
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![ACI A/50K-RA-24"-GD 50,000 Ohm Thermistor, Rigid Probe Averaging, 24", Galvanized Enclosure | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-tt1k-d-18-4-gd_5b86661b-36fe-41a7-956f-70c1dc475607_medium.png?v=1719981799)
A / 50K-RA-24"-GD | 50, 000 Ohm Thermistor, Rigid Probe Averaging, 24", Galvanized Enclosure | ACI
Brand: ACI
SKU: A/50K-RA-24"-GD
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![ACI A/50K-PO-4" 50,000 Ohm Thermistor, Probe Only, 4" | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-0-1cp-po-4_2d8d4bf3-a98d-4284-af26-22181e944b9d_medium.jpg?v=1719981791)
A / 50K-PO-4" | 50, 000 Ohm Thermistor, Probe Only, 4" | ACI
Brand: ACI
SKU: A/50K-PO-4"
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![ACI A/50K-RA-18"-GD 50,000 Ohm Thermistor, Rigid Probe Averaging, 18", Galvanized Enclosure | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-tt1k-d-18-4-gd_c6643bac-005b-431f-be1a-d720daa9f7a9_medium.png?v=1719981790)
A / 50K-RA-18"-GD | 50, 000 Ohm Thermistor, Rigid Probe Averaging, 18", Galvanized Enclosure | ACI
Brand: ACI
SKU: A/50K-RA-18"-GD
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![ACI A/50K-DO-18"-20'CL2P 50,000 Ohm Thermistor, Duct, Without Box, 18", 20' Plenum Cable | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-1-8k-do-4-10-cl2p_05d013c0-8ea7-4c8d-a0a5-ff849db0d338_medium.png?v=1719981786)
A / 50K-DO-18"-20'CL2P | 50, 000 Ohm Thermistor, Duct, Without Box, 18", 20' Plenum Cable | ACI
Brand: ACI
SKU: A/50K-DO-18"-20'CL2P
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![ACI A/50K-RA-12"-GD 50,000 Ohm Thermistor, Rigid Probe Averaging, 12", NEMA 3R Enclosure | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-tt1k-d-18-4-gd_121f31f9-6ca6-484f-a7b5-fa378dba63e4_medium.png?v=1719981775)
A / 50K-RA-12"-GD | 50, 000 Ohm Thermistor, Rigid Probe Averaging, 12", NEMA 3R Enclosure | ACI
Brand: ACI
SKU: A/50K-RA-12"-GD
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![ACI A/50K-DO-12"-20'CL2P 50,000 Ohm Thermistor, Duct, Without Box, 12", 20' Plenum Cable | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-1-8k-do-4-10-cl2p_e5f95e97-b8f3-4a74-8219-bcbc005e0b43_medium.png?v=1719981790)
A / 50K-DO-12"-20'CL2P | 50, 000 Ohm Thermistor, Duct, Without Box, 12", 20' Plenum Cable | ACI
Brand: ACI
SKU: A/50K-DO-12"-20'CL2P
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![ACI A/50K-DO-6"-20'CL2P 50,000 Ohm Thermistor, Duct, Without Box, 6", 20' Plenum Cable | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-1-8k-do-4-10-cl2p_2cd2e7b6-a5f8-4624-8e42-b112f0006de2_medium.png?v=1719981800)
A / 50K-DO-6"-20'CL2P | 50, 000 Ohm Thermistor, Duct, Without Box, 6", 20' Plenum Cable | ACI
Brand: ACI
SKU: A/50K-DO-6"-20'CL2P
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![ACI A/50K-DO-4"-20'CL2P 50,000 Ohm Thermistor, Duct, Without Box, 4", 20' Plenum Cable | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-1-8k-do-4-10-cl2p_a0ba5ad0-6633-4276-8400-52fd87e93937_medium.png?v=1719981780)
A / 50K-DO-4"-20'CL2P | 50, 000 Ohm Thermistor, Duct, Without Box, 4", 20' Plenum Cable | ACI
Brand: ACI
SKU: A/50K-DO-4"-20'CL2P
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![ACI A/50K-DO-18"-10'CL2P 50,000 Ohm Thermistor, Duct, Without Box, 18", 10' Plenum Cable | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-1-8k-do-4-10-cl2p_23186508-30e5-4b83-ab2c-5c404c13cf9a_medium.png?v=1719981785)
A / 50K-DO-18"-10'CL2P | 50, 000 Ohm Thermistor, Duct, Without Box, 18", 10' Plenum Cable | ACI
Brand: ACI
SKU: A/50K-DO-18"-10'CL2P
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![ACI A/50K-DO-12"-10'CL2P 50,000 Ohm Thermistor, Duct, Without Box, 12", 10' Plenum Cable | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-1-8k-do-4-10-cl2p_37c063c6-16de-4aac-bd2d-a55acc56002f_medium.png?v=1719981790)
A / 50K-DO-12"-10'CL2P | 50, 000 Ohm Thermistor, Duct, Without Box, 12", 10' Plenum Cable | ACI
Brand: ACI
SKU: A/50K-DO-12"-10'CL2P
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![ACI A/50K-DO-4"-10'CL2P 50,000 Ohm Thermistor, Duct, Without Box, 4", 10' Plenum Cable | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-1-8k-do-4-10-cl2p_d6e7c79b-35e1-4baf-bd1f-da731c9d2b8d_medium.png?v=1719981810)
A / 50K-DO-4"-10'CL2P | 50, 000 Ohm Thermistor, Duct, Without Box, 4", 10' Plenum Cable | ACI
Brand: ACI
SKU: A/50K-DO-4"-10'CL2P
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![ACI A/50K-PO-8" 50,000 Ohm Thermistor, Probe Only, 8" | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-0-1cp-po-4_272e8c3a-9d41-40e1-add8-dfb3b2b9416c_medium.jpg?v=1719981809)
A / 50K-PO-8" | 50, 000 Ohm Thermistor, Probe Only, 8" | ACI
Brand: ACI
SKU: A/50K-PO-8"
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![ACI A/50K-DO-18"-6'CL2P 50,000 Ohm Thermistor, Duct, Without Box, 18", 6' Plenum Cable | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-1-8k-do-4-10-cl2p_17d3de0e-e9c1-4466-9b61-7184e5198004_medium.png?v=1719981780)
A / 50K-DO-18"-6'CL2P | 50, 000 Ohm Thermistor, Duct, Without Box, 18", 6' Plenum Cable | ACI
Brand: ACI
SKU: A/50K-DO-18"-6'CL2P
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![ACI A/50K-DO-12"-6'CL2P 50,000 Ohm Thermistor, Duct, Without Box, 12", 6' Plenum Cable | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-1-8k-do-4-10-cl2p_962e6fb2-b262-4bd1-b3ed-9f96a9e6eb94_medium.png?v=1719981786)
A / 50K-DO-12"-6'CL2P | 50, 000 Ohm Thermistor, Duct, Without Box, 12", 6' Plenum Cable | ACI
Brand: ACI
SKU: A/50K-DO-12"-6'CL2P
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