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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/1K-3W-I-2.5"-BB-NIST 1,000 Ohm (Three Wires) RTD, Immersion, Welded Well, 2.5", NEMA 3R Enclosure, NIST Cert | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-balco-i-2-5-bb_8c0c8152-9607-4be7-8206-343afaacfb00_medium.png?v=1719981565)
A / 1K-3W-I-2.5"-BB-NIST | 1, 000 Ohm (Three Wires) RTD, Immersion, Welded Well, 2.5", NEMA 3R Enclosure, NIST Cert | ACI
Brand: ACI
SKU: A/1K-3W-I-2.5"-BB-NIST
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![ACI A/100KS-D-8"-BB 100,000 Ohm Thermistor, Duct, 8", NEMA 3R Enclosure | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-tt1k-d-8-1-bb_50aafc59-923a-4c2b-89f0-ae7766d95f80_medium.png?v=1719981478)
A / 100KS-D-8"-BB | 100, 000 Ohm Thermistor, Duct, 8", NEMA 3R Enclosure | ACI
Brand: ACI
SKU: A/100KS-D-8"-BB
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![ACI A/1K-2W-RS-A03-C5 1,000 Ohm (Two Wires) RTD, Room (R), Setpoint, 0 to 10K Ohms, Cool/Warm Sticker | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-10ks-rs-a26-c5_78209ad7-778a-47b0-8a43-df0f58279221_medium.png?v=1719981596)
A / 1K-2W-RS-A03-C5 | 1, 000 Ohm (Two Wires) RTD, Room (R), Setpoint, 0 to 10K Ohms, Cool / Warm Sticker | ACI
Brand: ACI
SKU: A/1K-2W-RS-A03-C5
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![ACI A/100-2W-R-RJ4 100 Ohm (Two Wires) RTD, Room (R), RJ4 | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-cp-r-rj6_43f1d4bf-7f4f-4274-9842-17bb31e8a7fa_medium.png?v=1719981324)
A / 100-2W-R-RJ4 | 100 Ohm (Two Wires) RTD, Room (R), RJ4 | ACI
Brand: ACI
SKU: A/100-2W-R-RJ4
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![ACI A/1K-2W-IM-1"-GD-NIST 1,000 Ohm (Two Wires) RTD, Immersion, Machined Well, 1", Galvanized Enclosure, NIST cert | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-cp-im-4-gd_3feaf243-665a-48d7-9ec3-31039664fc91_medium.jpg?v=1719981542)
A / 1K-2W-IM-1"-GD-NIST | 1, 000 Ohm (Two Wires) RTD, Immersion, Machined Well, 1", Galvanized Enclosure, NIST cert | ACI
Brand: ACI
SKU: A/1K-2W-IM-1"-GD-NIST
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![ACI A/TT1K-D-6"-1-GD Transmitter w/ 1,000 Ohm RTD, Duct, 6", Galvanized Enclosure, 1-5VDC Output | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-tt1k-d-18-4-gd_9abecac1-41f1-4907-8280-dfa2a87511e5_medium.png?v=1719982721)
A / TT1K-D-6"-1-GD | Transmitter w / 1, 000 Ohm RTD, Duct, 6", Galvanized Enclosure, 1-5VDC Output | ACI
Brand: ACI
SKU: A/TT1K-D-6"-1-GD
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![ACI A/DLP-001-W-B-D-A-0-A-0P-S Differential Low Pressure, 1 inWC, Bidirectional, LCD, 0.50% Accuracy, No Pitot Tube, 4-20mA Output, No Nist, Standard | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-dlp-025-p-b-n-a-0-c-0p-s_f76b828d-272c-4b00-b5f3-deb195db7ec9_medium.png?v=1719982170)
A / DLP-001-W-B-D-A-0-A-0P-S | Differential Low Pressure, 1 inWC, Bidirectional, LCD, 0.50% Accuracy, No Pitot Tube, 4-20mA Output, No Nist, Standard | ACI
Brand: ACI
SKU: A/DLP-001-W-B-D-A-0-A-0P-S
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![ACI FSIG-LSH-024 PIEZOELECTRIC HORN SOUND MODULE 24VDC | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-fsig-lsl-024a_medium.png?v=1719983048)
FSIG-LSH-024 | PIEZOELECTRIC HORN SOUND MODULE 24VDC | ACI
Brand: ACI
SKU: FSIG-LSH-024
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![ACI FSIG-K8285237A FLASHER | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-fsig-lsl-024a_31b8766b-e6af-4160-a32c-d0debfd0cffa_medium.png?v=1719983153)
FSIG-K8285237A | FLASHER | ACI
Brand: ACI
SKU: FSIG-K8285237A
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![ACI A/100-3W-S10-PB 100 Ohm (Three Wires) RTD, Strap On, 10" Strap, Plastic Enclosure | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-1-8k-s-pb_8350e70a-c7ab-4720-9988-24175121ab14_medium.png?v=1719981454)
A / 100-3W-S10-PB | 100 Ohm (Three Wires) RTD, Strap On, 10" Strap, Plastic Enclosure | ACI
Brand: ACI
SKU: A/100-3W-S10-PB
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![ACI A/100-3W-PO-4"-6'CL2P 100 Ohm (Three Wires) RTD, Probe Only, 4", 6' Plenum Cable | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-10k-e1-po-4-10-cl2p-nist_medium.png?v=1719981378)
A / 100-3W-PO-4"-6'CL2P | 100 Ohm (Three Wires) RTD, Probe Only, 4", 6' Plenum Cable | ACI
Brand: ACI
SKU: A/100-3W-PO-4"-6'CL2P
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![ACI A/100-3W-PM-20'CL2P 100 Ohm (Three Wire) RTD, Pipe Mount, 20' Plenum Cable | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-1-8k-pm-20-cl2p_919d37ed-993f-482a-b0f7-2e4b2352f447_medium.png?v=1719981449)
A / 100-3W-PM-20'CL2P | 100 Ohm (Three Wire) RTD, Pipe Mount, 20' Plenum Cable | ACI
Brand: ACI
SKU: A/100-3W-PM-20'CL2P
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![ACI A/CP-RS-A14-C5 10,000 Ohm Thermistor (Type II), Room (R), Setpoint 10K to 0 Ohms, Cool/Warm Sticker | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-10ks-rs-a26-c5_9d57b813-35b2-42fe-954a-1a4b95f782e8_medium.png?v=1719982166)
A / CP-RS-A14-C5 | 10, 000 Ohm Thermistor (Type II), Room (R), Setpoint 10K to 0 Ohms, Cool / Warm Sticker | ACI
Brand: ACI
SKU: A/CP-RS-A14-C5
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![ACI A/0.1CP-R High Accuracy 10,000 Ohm Thermistor (Type II), Room (R) | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-cp-r-rj6_c2296734-8a0f-43db-88d8-74e78de9aa75_medium.png?v=1719981292)
A / 0.1CP-R | High Accuracy 10, 000 Ohm Thermistor (Type II), Room (R) | ACI
Brand: ACI
SKU: A/0.1CP-R
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![ACI A/20K-R2SO-A02-B4 20,000 Ohm Thermistor, Room (R2), Setpoint 0 to 20K Ohms, Override, 55-85 Sticker | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-cp-r2so-a02-c5_4f46d6b0-302d-4b68-b374-5928d01d7545_medium.png?v=1719981716)
A / 20K-R2SO-A02-B4 | 20, 000 Ohm Thermistor, Room (R2), Setpoint 0 to 20K Ohms, Override, 55-85 Sticker | ACI
Brand: ACI
SKU: A/20K-R2SO-A02-B4
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![ACI A/1K-2W-FA-8'-4X 1,000 Ohm (Two Wires) RTD, Flexible Cable Averaging, 8', NEMA 4X Enclosure | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-1k-2w-fa-8-4x_75c2740d-636f-47d3-a591-c1da40662dba_medium.png?v=1719981551)
A / 1K-2W-FA-8'-4X | 1, 000 Ohm (Two Wires) RTD, Flexible Cable Averaging, 8', NEMA 4X Enclosure | ACI
Brand: ACI
SKU: A/1K-2W-FA-8'-4X
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View all →![ACI TSENSE-LCD CO2/RH/TEMP, LCD, RELAY, BACNT | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-tsense_12153699-a23d-423b-a6f0-a889b246d283_large.png?v=1719983166)
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)
EFB24-SR | Damper Actuator | 270 in-lb | Spg Rtn | 24V | Modulating | Belimo
Brand: Belimo
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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