Product Overview
•  One-stage heat
•  Gas, oil or electric systems
•  FS1500L – Horizontal
•  FS1500VL – Vertical
LIS205
Non-Programmable
Single-Stage Heat
Exclusive, 
patented insulation 
technology 
eliminates thermal 
drift caused by 
wall effect.
NEW
Thermal 
Intrusion 
Barrier
If you like this model, 
be sure to try out these 
other thermostats from 
ICM Controls!
SimpleComfort
®
 PRO Series –
Innovation and technology that simplifies 
installation and increases profitability!
•  Flexible 7-day, 5-2-day and 5-1-1-day programming 
(programmable models)
•  ICM’s patented Thermal Intrusion Barrier
•  ICM’s patent-pending SimpleSet™ Target 
Programming technology
•  Large display with backlight
•  Permanent memory
•  Auto or manual changeover
•  Field adjustable calibration
•  Configurable remote sensor compatible
•  Keypad lockout
•  Soft-touch controls
Programmable Thermostats
SC5010  – One-stage heat/cool or heat pump, dual 
powered
SC5011  – One-stage heat/cool or heat pump, 
hardwired
SC5211  – Two stage heat pump, hardwired
SC5811  – Two-stage heat/cool or heat pump, 
hardwired
SC5812  – Three-stage heat/two-stage cool or heat 
pump, dual fuel compatible, hardwired
Non-Programmable Thermostats
SC4010  – One-stage heat/cool or heat pump, dual 
powered
SC4011  – One-stage heat/cool or heat pump, 
hardwired
SC4211  – Two stage heat pump, hardwired
SC4811  – Two-stage heat/cool or heat pump, 
hardwired
SC4812  – Three-stage heat/two-stage cool or single 
or dual heat pump, hardwired
Specifications subject to change without notice.
Patent No. Design: 424,953
Patent No. Thermal Intrusion Barrier: 6,597,275
Patent Pending SimpleSet
TM
 Target Programming
1-800-365-5525
www.icmcontrols.com 
Dimensions
Specications
Electrical Rating:
•  24 VAC (18-30 VAC)
•  1 amp maximum per terminal
•  2 amp maximum total load
•  Easy access terminal block
Temperature Control Ranges:
•  35°F to 75°F, Accuracy: ±1°F
System Configurations:
•  Single-stage heat, gas, oil, electric
Terminations: S1, S2, W, G, R
Ordering Information:
•  FS1500L – Horizontal
•  FS1500VL – Vertical
FS1500L – Horizontal design
Thermal Intrusion Barrier
1.12”
3.75”
4.59”
3.25”
1.59”
3.25”
1.59”
4.59”
3.75”
FS1500VL – Vertical design


