Specifications

Environmental Controls
Fan and Heater Controls
Schaefer offers a broad range of sensors and manual and automatic controls to allow dairymen, greenhouse operators, plant
managers and others to control fans and heaters and optimize thermal comfort in their facilities. Brief descriptions of Schaefer’s
most popular controls and sensors are provided below. Other controls and sensors are available.
For more information please visit: www.schaeferfan.com
Model Description
AVS-500 TemperaturebasedAutomaticVariableSpeedcontrolinwaterandcorrosionresistantcontainerwithadjustableidlespeed,
  adjustabletemperaturedifferential,automaticshutoffandRFIlter;10A@115/230Voutput.
AVS-550 TemperaturebasedAutomaticVariableSpeedcontrolinwaterandcorrosionresistantcontainerwithadjustableidlespeed,
  adjustabletemperaturedifferential,automaticshutoff,digitaldisplayandRFIlter;10A@115/230Voutput.
AVS-650 TemperaturebasedAutomaticVariableSpeedcontrolinwaterandcorrosionresistantcontainerwithadjustableidlespeed,
  adjustabletemperaturedifferential,automaticshutoff,heaterinterlock,digitaldisplayandRFIlter;10A@115/230Voutput.
MTC-300 TemperaturebasedAutomaticVariableSpeedcontrolinwaterandcorrosionresistantcontainerwithadjustableidlespeed,
  adjustabletemperaturedifferential,andRFIlter;10A@115/230Voutput.
H-115 ManualVariableSpeedControlwithRFIlterinwaterandcorrosionresistantcontainer;6A@115Voutput.
H-230 ManualVariableSpeedControlwithRFIlterinwaterandcorrosionresistantcontainer;6A@230Voutput.
MSC-400 ManualVariableSpeedControlwithon/offtoggleswitchandRFIlterinnon-corrosivecontainer;12.5A@115/230Voutput.
THC-1 HumidityControllerforportableevaporativecoolerstomanagehumiditylevelswiththeturnofadial.
TF115 1-StageThermostatSwitch,40°Fto110°Fwith3°differential,NEMA4x,ULE50023;16A@120V,12A@240V,10A@277V.
T335 1-StageThermostatSwitch,40°Fto102°Fwith2.7°differential,weatherproofenclosure:12A@120V,10A@240V;imported.
TH109 2-StageThermostatSwitch,40°Fto100°Fwith3°differential,NEMA4x,ULE50023;16A@120V,12A@240V,10A@277V.
FS-20 ManualSwitchfor2-speedmotorswithheavydutytoggleswitchinwaterandcorrosionresistantcontainer.
NVC NaturalVentilationControlwith2relaystages(open/close);adjustabletemperatureset-pointanddifferential;manualoverride;
  LEDdisplay;corrosion,waterandreresistantenclosure;CSAapproved;6A@115/230V(relaystages).
TVS 3-StageEnvironmentalControlwith2variablestagesand1relaystagesplus1alarmrelay;7congurableprograms;adjustable
  temperatureset-point,differentialandhi/loalertsettings;LEDdisplay;corrosion,waterandreresistantenclosure;CSAapproved;
  7.5A@115/230V(variablestages)and6A@115/230V(relaystage).
SEC-HD 5-StageEnvironmentalControlwith2variablestagesand3relaystagesplus1alarmrelay;7congurableprograms;adjustable
  temperatureset-point,differentialandhi/loalertsettings;LEDdisplay;corrosion,waterandreresistantenclosure;CSAapproved;
  10A@115/230V(variablestages)and6A@115/230V(relaystages).
PEC-PLUS 8-StageEnvironmentalControlwith2variablestagesand6relaystagesplus1alarmrelay;programmable;adjustabletemperature
  set-point,differentialandhi/loalertsettings;LEDdisplay;corrosion,waterandreresistantenclosure;CSAapproved;10A@115/230V
  (variablestages)and10A@115/230V(relaystages).
SUPRA 16-StageEnvironmentalControlwith4variablestagesand12relaystagesplus1alarmrelay;programmable;adjustabletemperature
  set-point,differentialandhi/loalertsettings;humidityandwaterusemonitoring;4-lineLCDdisplay;corrosion,waterandre
  resistantenclosure;CSAapproved;10A@115/230V(variablestages)and10A@115/230V(relaystages).
AVS-500
AVS-650
TF115
TH109
SUPRA
SEC-HD
PEC-PLUS
Speed Controls
Humidistat, Thermostats and Switches
Programmable Controllers
MTC-300
30