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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/TT100-I-2.5"-1-GD IMMER 2.5", GD | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-balco-i-2-5-gd_7b189dde-f2ab-4bae-823b-846d79d9e242_medium.png?v=1719982628)
A / TT100-I-2.5"-1-GD | IMMER 2.5", GD | ACI
Brand: ACI
SKU: A/TT100-I-2.5"-1-GD
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A / TT100-D-8"-2-PB | DUCT 8", PB | ACI
Brand: ACI
SKU: A/TT100-D-8"-2-PB
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![ACI A/TT100-I-2.5"-1-4X IMMER 2.5", 4X | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-balco-i-2-5-4x_807c38c5-dc39-4b1f-9ccc-95cf2f15586d_medium.png?v=1719982613)
A / TT100-I-2.5"-1-4X | IMMER 2.5", 4X | ACI
Brand: ACI
SKU: A/TT100-I-2.5"-1-4X
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![ACI A/TT100-D-8"-2-GD DUCT 8", GD | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-tt1k-d-18-4-gd_4a99757c-5bd2-46c4-9991-491a12a106de_medium.png?v=1719982605)
A / TT100-D-8"-2-GD | DUCT 8", GD | ACI
Brand: ACI
SKU: A/TT100-D-8"-2-GD
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A / TT100-D-8"-2-BB | DUCT 8", BB | ACI
Brand: ACI
SKU: A/TT100-D-8"-2-BB
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![ACI A/TT100-D-8"-1-PB DUCT 8", PB | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-1k-ni-d-12-bb_bf42ae5c-9489-41fd-b5d5-8b71fec2a124_medium.png?v=1719982619)
A / TT100-D-8"-1-PB | DUCT 8", PB | ACI
Brand: ACI
SKU: A/TT100-D-8"-1-PB
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![ACI A/TT100-HT-I-2.5"-4-GD IMMER 2.5", GD | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-tt100-ht-i-2-5-4-gd_dde43ace-b353-4fa7-af7a-cfc08b2a8634_medium.png?v=1719982614)
A / TT100-HT-I-2.5"-4-GD | IMMER 2.5", GD | ACI
Brand: ACI
SKU: A/TT100-HT-I-2.5"-4-GD
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![ACI A/TT100-HT-D-8"-4-GD DUCT 8", GD | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-tt100-lt-d-8-2-gd_1e663440-6730-4d6a-8df7-ca9a265543e1_medium.png?v=1719982570)
A / TT100-HT-D-8"-4-GD | DUCT 8", GD | ACI
Brand: ACI
SKU: A/TT100-HT-D-8"-4-GD
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![ACI A/TT100-D-6"-4-PB DUCT 6", PB | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-1k-ni-d-12-bb_dc5ae181-a7f5-49d0-a427-bf07572f50d5_medium.png?v=1719982613)
A / TT100-D-6"-4-PB | DUCT 6", PB | ACI
Brand: ACI
SKU: A/TT100-D-6"-4-PB
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![ACI A/TT100-D-6"-4-GD DUCT 6", GD | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-tt1k-d-18-4-gd_a0df333b-e58c-471b-88bb-26f35f8294ba_medium.png?v=1719982570)
A / TT100-D-6"-4-GD | DUCT 6", GD | ACI
Brand: ACI
SKU: A/TT100-D-6"-4-GD
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A / TT100-D-6"-2-GD | DUCT 6", GD | ACI
Brand: ACI
SKU: A/TT100-D-6"-2-GD
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![ACI A/TT100-D-4"-4-PB DUCT 4", PB | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-1k-ni-d-12-bb_bfc91b02-7c7f-44d5-b756-9895436d2ea4_medium.png?v=1719982565)
A / TT100-D-4"-4-PB | DUCT 4", PB | ACI
Brand: ACI
SKU: A/TT100-D-4"-4-PB
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![ACI A/TT100-D-4"-4-GD DUCT 4", GD | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-tt1k-d-18-4-gd_b21d43d1-cd78-494a-9243-bf19911fe764_medium.png?v=1719982609)
A / TT100-D-4"-4-GD | DUCT 4", GD | ACI
Brand: ACI
SKU: A/TT100-D-4"-4-GD
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![ACI A/TT100-D-18"-4-PB DUCT 18", PB | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-1k-ni-d-12-bb_573ed70d-d138-4144-ac19-7cc807bce9e2_medium.png?v=1719982565)
A / TT100-D-18"-4-PB | DUCT 18", PB | ACI
Brand: ACI
SKU: A/TT100-D-18"-4-PB
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![ACI A/TT100-D-18"-4-GD DUCT 18", GD | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-tt1k-d-18-4-gd_f5c7478c-7c25-4c54-8712-17444c38e722_medium.png?v=1719982570)
A / TT100-D-18"-4-GD | DUCT 18", GD | ACI
Brand: ACI
SKU: A/TT100-D-18"-4-GD
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![ACI A/TT100-D-8"-1-GD DUCT 8", GD | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-tt1k-d-18-4-gd_c2b93ff9-f96c-4c7b-a1c1-8f02c011ca55_medium.png?v=1719982569)
A / TT100-D-8"-1-GD | DUCT 8", GD | ACI
Brand: ACI
SKU: A/TT100-D-8"-1-GD
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![ACI A/TT100-D-18"-4-EXPL EXPL ENC, DUCT 18" | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-ttm1k-d-8-4-expl_88075c15-eaba-43bc-91d8-0e618183a375_medium.jpg?v=1719982623)
A / TT100-D-18"-4-EXPL | EXPL ENC, DUCT 18" | ACI
Brand: ACI
SKU: A/TT100-D-18"-4-EXPL
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![ACI A/TT100-D-18"-4-4X DUCT 18", 4X | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-100-3w-d-18-4x_e1e9cd4f-2378-47f2-a67a-1123b6814d6b_medium.png?v=1719982614)
A / TT100-D-18"-4-4X | DUCT 18", 4X | ACI
Brand: ACI
SKU: A/TT100-D-18"-4-4X
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![ACI A/TT100-D-12"-4-PB DUCT 12", PB | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-1k-ni-d-12-bb_9a5458ae-fa42-4dbc-af67-ab0f90965c40_medium.png?v=1719982589)
A / TT100-D-12"-4-PB | DUCT 12", PB | ACI
Brand: ACI
SKU: A/TT100-D-12"-4-PB
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![ACI A/TT100-D-6"-4-BB DUCT 6", BB | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-tt1k-d-8-1-bb_bee227d9-72b2-40db-acca-be476bf93089_medium.png?v=1719982623)
A / TT100-D-6"-4-BB | DUCT 6", BB | ACI
Brand: ACI
SKU: A/TT100-D-6"-4-BB
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![ACI A/TT100-D-6"-4-4X DUCT 6", 4X | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-100-3w-d-18-4x_91579f1a-be6b-4f12-b802-71fa9d44fcae_medium.png?v=1719982614)
A / TT100-D-6"-4-4X | DUCT 6", 4X | ACI
Brand: ACI
SKU: A/TT100-D-6"-4-4X
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![ACI A/TT100-D-12"-4-EXPL DUCT 12", EXPL ENC | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-ttm1k-d-8-4-expl_99ce2fc7-216a-4270-aceb-341a7528ace8_medium.jpg?v=1719982633)
A / TT100-D-12"-4-EXPL | DUCT 12", EXPL ENC | ACI
Brand: ACI
SKU: A/TT100-D-12"-4-EXPL
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![ACI A/TT100-D-12"-4-BB DUCT 12", BB | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-tt1k-d-8-1-bb_a9febdfc-4188-47f6-9bb3-a98316fe6365_medium.png?v=1719982569)
A / TT100-D-12"-4-BB | DUCT 12", BB | ACI
Brand: ACI
SKU: A/TT100-D-12"-4-BB
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![ACI A/TT100-D-12"-2-PB DUCT 12", PB | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-1k-ni-d-12-bb_43c6fd8b-b92b-47e3-96bb-8aff3ab53da6_medium.png?v=1719982565)
A / TT100-D-12"-2-PB | DUCT 12", PB | ACI
Brand: ACI
SKU: A/TT100-D-12"-2-PB
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TSENSE-LCD | CO2/RH/TEMP, LCD, RELAY, BACNT | ACI
Brand: ACI
SKU: TSENSE-LCD![Belimo EFB24-SR Damper Actuator | 270 in-lb | Spg Rtn | 24V | Modulating | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/EFB24-SR-product_retina_d9dc7c54-3b39-4c68-a53b-80d3bdbc0508_large.jpg?v=1719985477)
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Brand: Belimo
SKU: EFB24-SR![Siemens GRD221.1U Damper Actuator | Spring Return | 120 VAC | On/Off | 30 lb-in | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/GRD221.1U_large.jpg?v=1720023729)
GRD221.1U | Damper Actuator | Spring Return | 120 VAC | On/Off | 30 lb-in | Siemens
Brand: Siemens
SKU: GRD221.1U![Veris EP2100S EP | Analog In | 3-15/0-20psi | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/EP2121S_b5cdb5ef-84c6-424a-910b-1c0e494ebdc1_large.jpg?v=1720029722)
EP2100S | EP | Analog In | 3-15/0-20psi | Veris
Brand: Veris
SKU: EP2100S![Veris E51C2 Bi-Directional DIN Energy Meter | Modbus | Pulse Out | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/E50B1_ba38f752-2758-415d-9171-4b989d36e1e7_large.jpg?v=1720452238)
E51C2 | Bi-Directional DIN Energy Meter | Modbus | Pulse Out | Veris
Brand: Veris
SKU: E51C2![Siemens 147-2000 Positioning Relay, Pneumatic, Adj Start Point and Span, Rapid Response | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/147-2000_large.jpg?v=1720021388)
147-2000 | Positioning Relay, Pneumatic, Adj Start Point and Span, Rapid Response | Siemens
Brand: Siemens
SKU: 147-2000