gas sensors
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![Johnson Controls ECO-D-B-41-45 CO 0-500 PPM+NO2 0-10 PPM; CO 0-500 PPM+NO2 0-10 PPM | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/ECO-D-B-41-45_c1b91550-2293-4f53-a6e6-746f27fb0310_medium.png?v=1719992890)
ECO-D-B-41-45 | CO 0-500 PPM+NO2 0-10 PPM; CO 0-500 PPM+NO2 0-10 PPM | Johnson Controls
Brand: Johnson Controls
SKU: ECO-D-B-41-45
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![Johnson Controls ECO-D-B-42 AMMONIA (NH3) 0-100 PPM; AMMONIA (NH3) 0-100 PPM | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/ECO-D-B-42_48103fbc-bf05-4310-b901-922875bde42b_medium.png?v=1719992891)
ECO-D-B-42 | AMMONIA (NH3) 0-100 PPM; AMMONIA (NH3) 0-100 PPM | Johnson Controls
Brand: Johnson Controls
SKU: ECO-D-B-42
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![Johnson Controls ECO-D-B-12-41 CH4 0-100LEL +CO 0-500PPM; CH4 0-100LEL +CO 0-500PPM | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/ECO-D-B-12-41_c40de07b-2952-4ea1-9bd3-baeb7b1ebc7a_medium.png?v=1719992891)
ECO-D-B-12-41 | CH4 0-100LEL +CO 0-500PPM; CH4 0-100LEL +CO 0-500PPM | Johnson Controls
Brand: Johnson Controls
SKU: ECO-D-B-12-41
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![Johnson Controls ECO-D-B-11-EX HYDROGEN (H2) 0-100% LEL; HYDROGEN (H2) 0-100% LEL | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/ECO-D-B-11-EX_5bc2fe25-df2e-4d2d-b40f-d0e0ad84faf6_medium.png?v=1719992891)
ECO-D-B-11-EX | HYDROGEN (H2) 0-100% LEL; HYDROGEN (H2) 0-100% LEL | Johnson Controls
Brand: Johnson Controls
SKU: ECO-D-B-11-EX
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![Johnson Controls ECO-D-B-31-41 O2 0-25%VOL+(CO) 0-500PPM; O2 0-25%VOL+(CO) 0-500PPM | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/ECO-D-B-31-41_947f7e3f-29fb-498f-b133-686ac32538e4_medium.png?v=1719992886)
ECO-D-B-31-41 | O2 0-25%VOL+(CO) 0-500PPM; O2 0-25%VOL+(CO) 0-500PPM | Johnson Controls
Brand: Johnson Controls
SKU: ECO-D-B-31-41
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![Johnson Controls ECO-D-B-13-EX PROPANE (C3H8) 0-100% LEL; PROPANE (C3H8) 0-100% LEL | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/ECO-D-B-13-EX_3bb23dca-a18e-4c4b-8b61-70eda19f5844_medium.png?v=1719992887)
ECO-D-B-13-EX | PROPANE (C3H8) 0-100% LEL; PROPANE (C3H8) 0-100% LEL | Johnson Controls
Brand: Johnson Controls
SKU: ECO-D-B-13-EX
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![Johnson Controls ECO-D-B-20 ALCOHOL VAPOR 0-100% LEL; ALCOHOL VAPOR 0-100% LEL | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/ECO-D-B-20_a8acb2a9-88cc-4c6b-8d42-c99fb6c8c783_medium.png?v=1719992886)
ECO-D-B-20 | ALCOHOL VAPOR 0-100% LEL; ALCOHOL VAPOR 0-100% LEL | Johnson Controls
Brand: Johnson Controls
SKU: ECO-D-B-20
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![Johnson Controls ECO-D-B-15 PETROL/GASVAPOR 0-100%LEL; PETROL/GASVAPOR 0-100%LEL | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/ECO-D-B-15_808a509e-b384-4611-863c-95bf3cef1e35_medium.png?v=1719992886)
ECO-D-B-15 | PETROL / GASVAPOR 0-100%LEL; PETROL / GASVAPOR 0-100%LEL | Johnson Controls
Brand: Johnson Controls
SKU: ECO-D-B-15
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![Johnson Controls ECO-D-B-42-EX AMMONIA (NH3) 0-100 PPM; AMMONIA (NH3) 0-100 PPM | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/ECO-D-B-42-EX_5d6d2e1f-007c-421e-980c-5b3be0dd7441_medium.png?v=1719992886)
ECO-D-B-42-EX | AMMONIA (NH3) 0-100 PPM; AMMONIA (NH3) 0-100 PPM | Johnson Controls
Brand: Johnson Controls
SKU: ECO-D-B-42-EX
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![Johnson Controls ECO-D-B-11 HYDROGEN (H2) 0-100% LEL; HYDROGEN (H2) 0-100% LEL | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/ECO-D-B-11_bae7d07e-db27-4898-9a1d-ee08bd485c2a_medium.png?v=1719992886)
ECO-D-B-11 | HYDROGEN (H2) 0-100% LEL; HYDROGEN (H2) 0-100% LEL | Johnson Controls
Brand: Johnson Controls
SKU: ECO-D-B-11
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![Belimo EXT-OP-6014-B Gas Monitor | NO2 (0…10ppm) | 2 Relays | BACnet MS/TP | CANbus | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/PIC_AM_Opera_6000-NO2-product_retina_f0a8c048-1893-49d4-a48b-d14caf68a020_medium.jpg?v=1719985650)
EXT-OP-6014-B | Gas Monitor | NO2 (0…10ppm) | 2 Relays | BACnet MS / TP | CANbus | Belimo (OBSOLETE)
Brand: Belimo
SKU: EXT-OP-6014-B
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![Belimo EXT-OP-5514 Replacement Sensor Module | NO2 (0…10ppm) | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/PIC_AM_EXT-OP-5514-product_medium.jpg?v=1719985605)
EXT-OP-5514 | Replacement Sensor Module | NO2 (0…10ppm) | Belimo (OBSOLETE)
Brand: Belimo
SKU: EXT-OP-5514
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![Belimo EXT-6002-250-14-B Gas Monitor | CO (0…250ppm) | NO2 (0…10ppm) | 2 Relays | BACnet MS/TP | CANbus | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/PIC_AM_Opera_Monitor_no_display-product_retina_68d30725-45a1-4856-916e-bd6532b3e76e_medium.jpg?v=1719985591)
EXT-6002-250-14-B | Gas Monitor | CO (0…250ppm) | NO2 (0…10ppm) | 2 Relays | BACnet MS / TP | CANbus | Belimo (OBSOLETE)
Brand: Belimo
SKU: EXT-6002-250-14-B
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![Belimo EXT-6002-250-14-C Gas Monitor | CO (0…250ppm) | NO2 (0…10ppm) | CANbus | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/PIC_AM_Opera_Monitor_no_display-product_retina_771db64a-b334-4664-947d-07e2b77b150d_medium.jpg?v=1719985581)
EXT-6002-250-14-C | Gas Monitor | CO (0…250ppm) | NO2 (0…10ppm) | CANbus | Belimo (OBSOLETE)
Brand: Belimo
SKU: EXT-6002-250-14-C
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![Belimo EXT-6002-250-14-A Gas Monitor | CO (0…250ppm) | NO2 (0…10ppm) | 2 Analog Outs | 1 Relay | BACnet MS/TP | CANbus | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/PIC_AM_Opera_Monitor_no_display-product_retina_0232b571-f0c7-4640-a1ff-7b4c7a5ce73f_medium.jpg?v=1719985576)
EXT-6002-250-14-A | Gas Monitor | CO (0…250ppm) | NO2 (0…10ppm) | 2 Analog Outs | 1 Relay | BACnet MS / TP | CANbus | Belimo (OBSOLETE)
Brand: Belimo
SKU: EXT-6002-250-14-A
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![Belimo EXT-OP-6014-A Gas Monitor | NO2 (0…10ppm) | 2 Analog Outputs | 1 Relay | BACnet MS/TP | CANbus | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/PIC_AM_Opera_6000-NO2-product_retina_d8e1b75d-56c1-4153-bffb-1b79c4ad0e9c_medium.jpg?v=1719985576)
EXT-OP-6014-A | Gas Monitor | NO2 (0…10ppm) | 2 Analog Outputs | 1 Relay | BACnet MS / TP | CANbus | Belimo (OBSOLETE)
Brand: Belimo
SKU: EXT-OP-6014-A
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![ACI Q5-SO2-6P-O-X SULPHUR DIOXIDE, 0-6 PPM, ETL | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-b5-butan-100l-o-x_28f5ce8f-d7da-407b-9041-0ae7550d0748_medium.jpg?v=1719983198)
Q5-SO2-6P-O-X | SULPHUR DIOXIDE, 0-6 PPM, ETL | ACI
Brand: ACI
SKU: Q5-SO2-6P-O-X
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![ACI Q5-GENL-100L-O-X-GASOLINE COMBUSTIBLE GASOLINE, ETL | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-b5-butan-100l-o-x_e232fe1f-efce-40c4-b2db-ac1e89ce27fe_medium.jpg?v=1719983185)
Q5-GENL-100L-O-X-GASOLINE | COMBUSTIBLE GASOLINE, ETL | ACI
Brand: ACI
SKU: Q5-GENL-100L-O-X-GASOLINE
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![ACI Q8-C3H8-100L-O-X PROPANE GAS SENSOR QEL | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-q8-butan-100l-r-x_af2b9020-a254-42d1-8b22-48af5d9b73a8_medium.png?v=1719983180)
Q8-C3H8-100L-O-X | PROPANE GAS SENSOR QEL | ACI
Brand: ACI
SKU: Q8-C3H8-100L-O-X
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![ACI QTS-17171X-S000000 Expl Proof Sensor, Hydrogen, 0-100% LEL, 3-wire 4-20mA | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-qts-17131x-s000000_6a83d00d-83eb-480a-9575-259c027d705a_medium.png?v=1719983176)
QTS-17171X-S000000 | Expl Proof Sensor, Hydrogen, 0-100% LEL, 3-wire 4-20mA | ACI
Brand: ACI
SKU: QTS-17171X-S000000
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![ACI Q8-CH4-100L-R-X METHANE, CATALYTIC, REMOTE SEN | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/aci-q8-butan-100l-r-x_e2bc909f-dd5a-4f99-aa89-17cb5ef6bf0d_medium.png?v=1719983167)
Q8-CH4-100L-R-X | METHANE, CATALYTIC, REMOTE SEN | ACI
Brand: ACI
SKU: Q8-CH4-100L-R-X
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![ACI Q8-CL2-5P-0-A Q8-CL2/ Chlorine Electrochemical 0-5PPM, Explosion Proof Enclosure | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/logo_aci_product_8ad28f61-4470-49fa-b1bd-9ed120535cac_medium.png?v=1719983170)
Q8-CL2-5P-0-A | Q8-CL2 / Chlorine Electrochemical 0-5PPM, Explosion Proof Enclosure | ACI (OBSOLETE)
Brand: ACI
SKU: Q8-CL2-5P-0-A
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