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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/RH3-R-LCD-420 Relative Humidity, Room, Humidity with LCD, 4-20mA | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-rh3-r-lcd-010-nist_7e97e06c-216f-46bf-b7cf-69024ef47eb3_medium.png?v=1719982504)
A / RH3-R-LCD-420 | Relative Humidity, Room, Humidity with LCD, 4-20mA | ACI
Brand: ACI
SKU: A/RH3-R-LCD-420
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![ACI A/RH3-R-LCD-010 Relative Humidity, Room, Humidity with LCD, 0-10 VDC | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-rh3-r-lcd-010_ed07903f-768f-4335-ab56-1d9a455d738e_medium.png?v=1719982503)
A / RH3-R-LCD-010 | Relative Humidity, Room, Humidity with LCD, 0-10 VDC | ACI
Brand: ACI
SKU: A/RH3-R-LCD-010
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![ACI ESENSE II FAI DISP IAQ INDICATORS, US J BOX | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-esense-ii-fai-disp_6de3df5a-0c2f-4bfb-938b-2d083e0eccbb_medium.png?v=1719983029)
ESENSE II FAI DISP | IAQ INDICATORS, US J BOX | ACI
Brand: ACI
SKU: ESENSE II FAI DISP
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![ACI A/TT1K-O-4-4X-POTTED OUTSIDE, 4X, POTTED PCB | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-ttm1k-o-4-bb-potted_a03c7418-afe8-4d24-9968-3a22aff600ec_medium.png?v=1719982794)
A / TT1K-O-4-4X-POTTED | OUTSIDE, 4X, POTTED PCB | ACI
Brand: ACI
SKU: A/TT1K-O-4-4X-POTTED
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![ACI A/M4"-316SS 4" MACHINED 316SS THERMOWELL | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-m1_af3a92e8-4896-479a-b565-f911dd72a849_medium.png?v=1719982309)
A / M4"-316SS | 4" MACHINED 316SS THERMOWELL | ACI
Brand: ACI
SKU: A/M4"-316SS
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![ACI A/100-3W-PO-4"-EXPL EXPL PROBE 4" | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-20k-po-4-expl_835e6588-01fc-4fdd-a754-26d446af8335_medium.jpg?v=1719981382)
A / 100-3W-PO-4"-EXPL | EXPL PROBE 4" | ACI
Brand: ACI
SKU: A/100-3W-PO-4"-EXPL
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![ACI A/CP-DO-4"-240"CL2P-QC 10,000 Ohm Thermistor (Type II), Quick Connects, 4" Probe | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-cp-do-12-96-cl2p-qc_a1bf43cc-37d5-4c46-987b-94cf0481e31f_medium.jpg?v=1719982040)
A / CP-DO-4"-240"CL2P-QC | 10, 000 Ohm Thermistor (Type II), Quick Connects, 4" Probe | ACI
Brand: ACI
SKU: A/CP-DO-4"-240"CL2P-QC
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![ACI Universal Clip 6 Universal Clip Qty 6 | Universal Clip | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-universal-clip-6_c5f458f6-ff67-42d2-92dd-73e8c6539e3a_medium.jpg?v=1719983240)
Universal Clip 6 | Universal Clip Qty 6 | Universal Clip | ACI
Brand: ACI
SKU: Universal Clip 6
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![ACI WT2630A WLS TEMP, ROOM, 32-104 DEG F | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-wt2630a_918ae177-b918-469e-aaf3-1d62bfeca65b_medium.png?v=1719983208)
WT2630A | WLS TEMP, ROOM, 32-104 DEG F | ACI
Brand: ACI
SKU: WT2630A
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![ACI STN-5.0' Sampling Tube for SL-2000 | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-sts-10-0_da4b301b-b136-48c8-b459-f73956920a57_medium.jpg?v=1719983179)
STN-5.0' | Sampling Tube for SL-2000 | ACI
Brand: ACI
SKU: STN-5.0'
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![ACI STN-2.5' Sampling Tube for SL-2000 | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-sts-10-0_785501e1-5e2a-4393-aa71-568188c60f1d_medium.jpg?v=1719983105)
STN-2.5' | Sampling Tube for SL-2000 | ACI
Brand: ACI
SKU: STN-2.5'
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![ACI A/TT100-I-4"-4-4X IMMER 4", 4X | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-balco-i-2-5-4x_b1fed6f6-9c3f-41ee-824e-fd64e5ab6818_medium.png?v=1719982633)
A / TT100-I-4"-4-4X | IMMER 4", 4X | ACI
Brand: ACI
SKU: A/TT100-I-4"-4-4X
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![ACI A/TT100-I-4"-4-GD IMMER 4", GD | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-a-balco-i-2-5-gd_3cc3226f-9615-455a-ad09-35fd785321b9_medium.png?v=1719982629)
A / TT100-I-4"-4-GD | IMMER 4", GD | ACI
Brand: ACI
SKU: A/TT100-I-4"-4-GD
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![ACI Q8-GENL-100L-O-X-ETHANOL COMBUSTIBLE ETHANOL, 0-100% | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-q8-butan-100l-r-x_c8da45ee-8071-46ad-8605-a802e3e89912_medium.png?v=1719983147)
Q8-GENL-100L-O-X-ETHANOL | COMBUSTIBLE ETHANOL, 0-100% | ACI
Brand: ACI
SKU: Q8-GENL-100L-O-X-ETHANOL
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![ACI Q5-CO2-5V-O-X CARBON DIOXIDE, 0-50K PPM,ETL | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-b5-butan-100l-o-x_a1984518-d135-4927-97e5-b3732c90f3cb_medium.jpg?v=1719983120)
Q5-CO2-5V-O-X | CARBON DIOXIDE, 0-50K PPM, ETL | ACI
Brand: ACI
SKU: Q5-CO2-5V-O-X
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![ACI Q5-CO2-5000P-O-X CARBON DIOXIDE, 0-5000PPM,ETL | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-b5-butan-100l-o-x_b49f91d2-2f71-412c-847f-4aa2aca16388_medium.jpg?v=1719983090)
Q5-CO2-5000P-O-X | CARBON DIOXIDE, 0-5000PPM, ETL | ACI
Brand: ACI
SKU: Q5-CO2-5000P-O-X
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![ACI Q5-CH4-100L-O-X METHANE SENSOR, 0-100%, ETL | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-b5-butan-100l-o-x_56fa85d1-263f-4ed1-90d4-f6ee63e43b95_medium.jpg?v=1719983058)
Q5-CH4-100L-O-X | METHANE SENSOR, 0-100%, ETL | ACI
Brand: ACI
SKU: Q5-CH4-100L-O-X
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![ACI PXP7.3G Analog Input to Pressure Output Interface Module | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-pxp0-3_6bbe0e79-32f2-4dd6-8cfc-fdef1ec7fe0f_medium.jpg?v=1719983048)
PXP7.3G | Analog Input to Pressure Output Interface Module | ACI
Brand: ACI
SKU: PXP7.3G
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![ACI PXP2.3FS Analog Input to Pressure Output Interface Module | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-pxp0-3_13ec455d-b8b4-452b-8755-582e75bb4df9_medium.jpg?v=1719983043)
PXP2.3FS | Analog Input to Pressure Output Interface Module | ACI
Brand: ACI
SKU: PXP2.3FS
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![ACI PTA2 Pulse Width (PWM) Input to Analog Output Interface Module | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-pta2_medium.jpg?v=1719983115)
PTA2 | Pulse Width (PWM) Input to Analog Output Interface Module | ACI
Brand: ACI
SKU: PTA2
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![ACI NSG HEAT TRANSFER PASTE 2 OZ NonSilicon Grease, 2 Oz | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-nsg-heat-transfer-paste-2-oz_medium.jpg?v=1718739564)
NSG HEAT TRANSFER PASTE 2 OZ | NonSilicon Grease, 2 Oz | ACI
Brand: ACI
SKU: NSG HEAT TRANSFER PASTE 2 OZ
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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 ZS-100 Weather shield - galvaneal (13" L x 8" W x 6" D). | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/ZS-100_ZS-101_Actuator_Accessory_38d7fd02-b94d-4c4f-a4a8-951e430e21de_large.png?v=1718728701)
ZS-100 | Weather shield - galvaneal (13" L x 8" W x 6" D). | Belimo
Brand: Belimo
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EFB24-SR | Damper Actuator | 270 in-lb | Spg Rtn | 24V | Modulating | Belimo
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