Dwyer Differential Pressure Switch Index
 | Series 1800 Low Differential Pressure Switch for General Industrial Service. Set Points from 0.07" to 85" w.c. Repetitive Accuracy within 2% |  | Series 1900 Compact Low Differential Pressure Switch. Set Points from 0.07" to 20" w.c., Repetitive Accuracy within 3% |
 | Series 1950 Explosion-proof Differential Pressure Switch. Compact, Low Cost, Explosion-proof and Weatherproof |  | Series H3 Explosion-Proof Differential Pressure Switch. Setpoints from 10" w.c. to 200 psid – Rated 1500 psig, Weatherproof |
 | Series 1950G Explosion-proof Differential Pressure Switch. Explosion-proof, Weatherproof, Compatible with Natural Gases |  | Series 1620 Single and Dual Pressure Switch. High Reliability, Repetitive Accuracy within ±1% |
 | Series 1630 Large Diaphragm Differential Pressure Switches. Visual Set Point Adjustment in 5 Standard Ranges, 0.05" to 12" w.c. Repetitive Accuracy within ±1% |  | Series 1640 Floating Contact Null Switch for High and Low Actuation. Visual Set Point Adjustment, Adjustable Null Zone |
 | Series DP Double Bellows Differential Pressure Switch. Visible Setpoints, Adjustable or Fixed Deadband |  | Series PG Gas Pressure/Differential Pressure Switch. External Adjustment, Visible Dial, Hermetically Sealed Snap or Mercury Switch |
 | Series 1996 Gas Pressure Switch. Compact, Low Cost, Range 1.4-20" w.c. |  | Series MDS Miniature Pressure Switch. Shock and Vibration Resistant, Lightweight and Compact, Gold Contacts Download |
 | Series MDA Miniature Adjustable Pressure Switch. Adjustable Set Points from 0.1 to 100" of H2O. Download |  | Series A4 Differential Pressure Switch. Adjustable Set Point, High Overpressure. |
 | Series PDPS Compact Economic Differential Pressure Switch. Low Pressures down to 0.07" w.c. Download |  | Series 1700 Low Differential Pressure Switch Designed for OEM Products. Competitively Priced Limit Switch Combines Fast, Simple Installation with Quality Construction and Materials, UL and CSA Recognized |
 | Series ADPS/EDPS HVAC Differential Pressure Switch. With Dual Scale Field Adjustable Set Point Knob |  | Series BYDS Bypass Damper Switch. Controls Zone Static by Modulating Motorized Damper |
 | Series 1831 DPDT Low Differential Pressure Switches. Manual Reset, No Power Required |  | Series BDPA Adjustable Differential Pressure Alarm. 24 Volt or Battery Powered, Built-in Audible and Visual Alarm |
 | Series DX Wet/Wet Differential Pressure Switch. NEMA 4X Enclosure, Low Differential Set Points |  | Series AT11910 ATEX Approved 1910 Differential Pressure Switch. Series 1910 in Flame-Proof ATEX Enclosure |
 | Series AT1ADPS ATEX Approved ADPS Adjustable Differential Pressure Switch. The ADPS in Flame-Proof ATEX Enclosure |  | Series AT21823 ATEX Approved 1823 Differential Pressure Switch. The 1823 in Flame-Proof ATEX Enclosure |