Model 341

SKU: 341

Alarm, One Relay, 4-20mA

The Delta Controls Model 341 Alarm is configured in a three inch discrete element modeling (DEM) package equipped with status LED lights and pushbuttons for setpoints, differential and delay. It is also equipped with voltage spike suppressors. Model 341 is for use with two-wire transmitters such as Delta Controls 500 Series pressure transmitter models and Model 173 capacitance level transmitter. These stand-alone devices can be used as alarms or differential control devices. It is suitable for tough industrial applications as it is rugged and sturdy, resists moisture, corrosion, and vibration due to epoxy potting.

One to three units can be mounted in a Delta Controls housing to provide various switch-sequencing functions such as alarm, differential control, and reverse / direct failsafe. They may be surface mounted or added to housings containing 4-20 mA transmitters to provide pump control, alarm, etc.


  • Available for mounting in Delta Controls housings or other enclosures
  • Housings may be surface or pipe stand mounted
  • Direct reading LCD display
  • Accepts 4-20 mA dc signal from any type transmitter: 2, 3, or 4-wire
  • Supplies DC power for 2 wire loops, and for 3 or 4 wire transmitters
  • Field selectable fail-safe action
  • Optional pump control functions
  • Adjustable time delays on relay operation
  • Built-in loop power supply
  • Optional explosion-proof housing


  • Sealed SPDT Relay: 5 A @ 240 ACV or 30 DCV
  • Setup: Push buttons for on setpoint, off setpoint, and delay
  • Power: 120 VAC / 240 VAC or 24 VDC

Certifications & Approvals

  • Explosion-proof
    Housing Option:
    Third Party Listed by CSA
    NRTL/C (USA and Canada)
    Class I, Groups B, C and D;
    Class II, Groups E, F and G;
    Class III; Encl 4X

Required Ordering Information

  • Detailed model number
  • Tag or nameplate detail (if required)
  • Documentation & testing packages (if required, refer to Additional Resources in the product catalog)

Additional Information


Alarm, One Relay, 4-20mA

Level Measurement


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