• Pressure actuated high limit, safety control for steam heating boilers, It breaks an electrical circuit to shut down the burner if steam pressure rises above a safe level
• Contains an SPST Micro switch snap-acting switch
• Sensitive pressure actuated diaphragm expands or contracts with pressure variations, moving a lever mechanism which operates the snap switch
• A screw on top of the case allows setpoint adjustment without removing the cover
• Differential is adjusted by means of a dial located inside the case
• Recommended minimum setpoint is differential setting plus 1-1/2 psi
• Stainless steel diaphragm sensor element
• Makes at setpoint on pressure fall breaks at setpoint plus differential on pressure rise

Honeywell C354

• Totally enclosed micro switch snap acting switches operate on temperature rise to setpoint
• Visible control point scale and External adjustments screw permit easy setting
• Horizontal insertion of the sensing element
• Direct/well immersion of the sensing element
• Remote bulb model may be used to sense air temperature in ducts and in outside air sensing applications
• Contacts make on temperature rise
• Screw terminals wiring

Honeywell C290-1A

• Powered by RedLINK reliability
• No interference with other wireless devices in the home
• Reliable performance in all climates
• Installs in minutes
• Up to 5 years battery life
• 2 months low battery warning
• Battery warning displayed on RedLINK enabled thermostats
• Used with RedLINK enabled thermostats and accessories
• Vertical mounting with supplied bracket and mounting hardware
• Thermistor sensor element
• - 1% RH condensing

Honeywell C7089R1013

• Totally enclosed micro switch snap-acting switches operate on temperature rise to setpoint
• Visible control point scale and External adjustments screw permit easy setting
• Direct or well immersion of the sensing element
• Remote bulb model may be used to sense air temperature in ducts and in outside air sensing applications Honeywell L4006A2007 High or Low Limit Immersion Aquastat Controller, 100 - 240 deg F, 5 - 30 deg F DifferentialSid Harvey Item #:C290A: Replaces Part #:'s : AQU4006A1678-C290 | AQU4006A2007-C290A | C290 | C290R |,
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  Honeywell C290A

• Completes circuit to household lamp on temperature fall, indicating inoperative heating equipment
• Plugs directly into wall outlet
• Lamp plugs into receptacle at bottom of winter watchman device
• Useful when house is unoccupied to notify a neighbour of a temperature drop so heating source fault can be rectified before freeze-up occurs
• Not precision calibrated for use as a thermostat

Honeywell C138-1

• Remote outdoor temperature sensor when installed the current outdoor temperature is displayed
• Also can be used to manage dual fuel and lock-out expensive auxiliary heat in heat pump applications
• Mounting clip allows easy sensor positioning on siding or soffit
• Factory calibrated, no field calibration required
• Maximum wire run of 200 feet
• Mounting clip provided and screws provided

Honeywell C7089U1006

Honeywell C7150B1004

Resideo C322-4

Resideo C345-2

Resideo C7400S1000

• Mount on return duct for backup control of non-zoned RedLink enabled wireless systems and thermostats
• Takes control of the equipment by turning on the blower fan and sensing the indoor temperature of the home
• Provides homeowners with peace of mind
• Installs in minutes

Honeywell C7735A1000

Resideo C7400A2001