RS" Models have built-in % power regulators for manual control. Heater output may be manually set as follows: OFF, 23-70%, or ON FULL. Changes in surrounding air temperature do not affect output of heater. For the RS model, select "yes" to Built in Heat Regulator option above. 
HS Series 
Basic Infrared heaters without any controls built-in. These heaters will always be on with power is applied. They can be controlled with an ON/OFF switch, or with a HTP-1 Portable Heater Thermostat. 
These are the most common heaters used for horse stalls or wash racks. The standard installation is to install a switched outlet on the ceiling with either an on/off switch on the wall (for stalls) or a Timer Switch that will automatically turn off the heater after a preset time (for wash stalls, tack rooms, etc.). 
Benefits and Features 
Keep your horses warm and comfortable, great for new born foals! 
Heat the horses, not the air in the whole barn! 
Dry horses faster in wash stalls - splashing will not damage heating element 
Warm show horses during the quick shedding of winter coats using an independent light source 
Provide a large radiant heat pattern without visible light 
Save wear and tear on costly blankets 
Durable metal sheath heating element lasts many years - much better than glass heat lamps! 
Easy to install 

RS" Models have built-in % power regulators for manual control. Heater output may be manually set as follows: OFF, 23-70%, or ON FULL. Changes in surrounding air temperature do not affect output of heater. For the RS model, select "yes" to Built in Heat Regulator option above. 
HS Series 
Basic Infrared heaters without any controls built-in. These heaters will always be on with power is applied. They can be controlled with an ON/OFF switch, or with a HTP-1 Portable Heater Thermostat. 
These are the most common heaters used for horse stalls or wash racks. The standard installation is to install a switched outlet on the ceiling with either an on/off switch on the wall (for stalls) or a Timer Switch that will automatically turn off the heater after a preset time (for wash stalls, tack rooms, etc.). 
Benefits and Features 
Keep your horses warm and comfortable, great for new born foals! 
Heat the horses, not the air in the whole barn! 
Dry horses faster in wash stalls - splashing will not damage heating element 
Warm show horses during the quick shedding of winter coats using an independent light source 
Provide a large radiant heat pattern without visible light 
Save wear and tear on costly blankets 
Durable metal sheath heating element lasts many years - much better than glass heat lamps! 
Easy to install