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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 EPC2GFSB ANLG-PNEU FB, BRACKET/FS/GAUGE | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-epc2gb_de1962f3-7565-4623-9872-ba96c086b77c_medium.png?v=1719983025)
EPC2GFSB | ANLG-PNEU FB, BRACKET / FS / GAUGE | ACI
Brand: ACI
SKU: EPC2GFSB
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![ACI EFP2G TO PNEUMATIC W/FEEDBACK 750 SC | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-efp_68edaa8d-259b-4820-bbda-a20b889e6872_medium.jpg?v=1719983028)
EFP2G | TO PNEUMATIC W / FEEDBACK 750 SC | ACI
Brand: ACI
SKU: EFP2G
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![ACI CO-R-RB-D CO ROOM W/LCD,RELAY,BUZZER | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-cts-m5220x-q000000_243f5f0c-f069-480d-a2c2-c067e5703953_medium.jpg?v=1719983014)
CO-R-RB-D | CO ROOM W / LCD, RELAY, BUZZER | ACI
Brand: ACI
SKU: CO-R-RB-D
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![ACI AAR Analog Input to Adjustible Relay Output Interface Module | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-aar_a0d54225-4f4f-44d8-808b-d8f4890f8f98_medium.jpg?v=1719981970)
AAR | Analog Input to Adjustible Relay Output Interface Module | ACI
Brand: ACI
SKU: AAR
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![ACI A/TTM1K-LTS-4-4X-10' FREEZER PROBE 2", 4X, 10' | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-1-8k-frz2-4x-30_89f444fa-2da6-4e66-a5b5-0b84ba9eb8f9_medium.png?v=1719982880)
A / TTM1K-LTS-4-4X-10' | FREEZER PROBE 2", 4X, 10' | ACI
Brand: ACI
SKU: A/TTM1K-LTS-4-4X-10'
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![ACI A/TTM1K-A-24'-4-GD AVERAGING 24', GD | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-1-8k-a-12-gd_641c2393-f551-4a81-bd22-3fb9b19dcdad_medium.png?v=1719982875)
A / TTM1K-A-24'-4-GD | AVERAGING 24', GD | ACI
Brand: ACI
SKU: A/TTM1K-A-24'-4-GD
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![ACI A/RH3-CP-O OUTSIDE, EH, 3% | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-rh3-1k-2w-o-05_8a040edd-db33-4ec1-a21f-05e9ee66a0b6_medium.png?v=1719982570)
A / RH3-CP-O | OUTSIDE, EH, 3% | ACI
Brand: ACI
SKU: A/RH3-CP-O
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![ACI A/RH3-CP-R2 ROOM, 3% | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-an-r2-rj4_88fcacbf-e21a-4947-93d6-9e5b4acbb99a_medium.png?v=1719982584)
A / RH3-CP-R2 | ROOM, 3% | ACI
Brand: ACI
SKU: A/RH3-CP-R2
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![ACI A/RH2-R 2% Accuracy RH Humidity Sensor | Room Zone Wall Humidity Sensor | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-cp-r-rj6_5b42116f-a99d-41be-ba5c-db8cef158d4f_medium.png?v=1719982435)
A / RH2-R | 2% Accuracy RH Humidity Sensor | Room Zone Wall Humidity Sensor | ACI
Brand: ACI
SKU: A/RH2-R
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![ACI A/RH2-AN-D DUCT, EH, 2% | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-rh2-1k-2w-d-nist_a21f21a5-ace8-43e9-823f-1abfe25830fd_medium.jpg?v=1719982402)
A / RH2-AN-D | DUCT, EH, 2% | ACI
Brand: ACI
SKU: A/RH2-AN-D
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![ACI A/GP 2'HARNESS GP HARNESS, PACKARD, 2' | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-gp-10-harness_942cba27-d328-40f3-b08f-d5b5072a7f4d_medium.png?v=1719982286)
A / GP 2'HARNESS | GP HARNESS, PACKARD, 2' | ACI
Brand: ACI
SKU: A/GP 2'HARNESS
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![ACI A/FLS-20-M Freeze Stat Manual 20ft | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-fls-06-a_fd93f677-87c7-4fe1-a0d6-98a1052d5373_medium.jpg?v=1719982257)
A / FLS-20-M | Freeze Stat Manual 20ft | ACI
Brand: ACI
SKU: A/FLS-20-M
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![ACI A/CP-DO-4"-96"CL2P-QC A/CP-DO-4"-96"-CL2P-QC | 10K ohm Type II | Duct Temperature Sensor | Sensor Length: 4 inch | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-cp-do-12-96-cl2p-qc_ee8344eb-1b47-472d-84fb-a67307ce317f_medium.jpg?v=1719982040)
A / CP-DO-4"-96"CL2P-QC | A / CP-DO-4"-96"-CL2P-QC | 10K ohm Type II | Duct Temperature Sensor | Sensor Length: 4 inch | ACI
Brand: ACI
SKU: A/CP-DO-4"-96"CL2P-QC
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![ACI A/CP-DO-8" 10K ohm Type II | Duct Temperature Sensor | Sensor Length: 8 inch | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-1-8k-do-12_d9c2e954-0e7f-4168-96b2-0470bc793474_medium.png?v=1719982046)
A / CP-DO-8" | 10K ohm Type II | Duct Temperature Sensor | Sensor Length: 8 inch | ACI
Brand: ACI
SKU: A/CP-DO-8"
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![ACI A/CP-DO-12" 10K ohm Type II | Duct Temperature Sensor | Sensor Length: 12 inch | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-1-8k-do-12_813a1dea-4022-4f16-bd27-677d6df01d1b_medium.png?v=1719982036)
A / CP-DO-12" | 10K ohm Type II | Duct Temperature Sensor | Sensor Length: 12 inch | ACI
Brand: ACI
SKU: A/CP-DO-12"
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![ACI A/BALCO-O-EH RTD 1000 ohm (Balco) | Outdoor Outside Air Temperature Sensor | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-1-8k-o-eh_dd931a7b-db53-4654-8d03-d5e1508b7d1a_medium.png?v=1719981975)
A / BALCO-O-EH | RTD 1000 ohm (Balco) | Outdoor Outside Air Temperature Sensor | ACI
Brand: ACI
SKU: A/BALCO-O-EH
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547-323A | RCM FM BAC +/-.25"wc(62.5Pa)0.5%FS | Siemens
Brand: Siemens
SKU: 547-323A