Some more information:
Modular Thermostats and Humidity Controls
You'll get the accuracy of an electronic unit in an easy-to-install design. Modules mount to surfaces or DIN-rails and plug together to reduce wiring. Each module is 5" Ht. x 2 3/8" Wd. x 2 3/8" Dp. and has four mounting slots for #6 screws (not included). Modules operate on 24 VAC, 50/60 Hz and control 120-240 VAC loads. UL listed. On/off thermostat modules can be used for heating and cooling and include a temperature sensor with two 9 3/4" leads. Switch is 10 amp SPDT (single pole, double throw). Units have screw terminal connections and a 7/8" dia. opening for conduit. You can add up to nine stage adder modules. Humidity control modules adjust humidity within a 10% to 90% relative humidity range. They have a 10-amp SPDT (single pole, double throw) switch and a sensor. Units have screw terminal connections and a 7/8" dia. opening for conduit. You can add up to five stage adder modules.
On/Off Thermostat Modules
Setpoint Range Each
On/Off Control -30° to +130° F 4733K71 $68.74
On/Off Control +90° to +250° F 4733K62 68.74
Humidity Control Modules
Each
Control Module with Room Sensor 4733K87 $273.08
Control Module with Duct Sensor 4733K89 288.63
Accessories and Replacement Parts
Stage adder modules provide the switching for each additional stage you add. They have a 10-amp SPDT (single pole, double throw) switch.
Digital display modules show the actual room temperature or humidity (from 0% to 100% humidity levels). Setpoint is displayed at the press of a button.
Remote cables let you mount displays further from controls.
Power supply produces 24 VDC power from 120/240 VAC input. Use to run controls and other modules. Has screw terminals and a 7/8" dia. opening for conduit.
Each
Thermostat Sensor Housing for Wall Mounting 4733K75 $38.27
Thermostat Sensor Housing for Submersion 4733K76 33.06
Stage Adder Module for Thermostat Modules 4733K73 44.29
Stage Adder Module for Humidity Control Modules 4733K82 64.17
Digital Display Module for Thermostats 4733K74 91.36
Digital Display Module for Humidity Controls 4733K83 98.64
3-ft. Remote Cable for Digital Display Modules 4733K92 33.93
50-ft. Remote Cable for Digital Display Modules 4733K93 69.10
120/240 VAC Input/24 VDC Output Power Supply 4733K91 40.02
Thermostat Repl. Sensor with 9 3/4" leads 4733K39 25.83
Thermostat Repl. Sensor with 9'9" leads 4733K41 47.43