The TopTech TT-S-755R/T755S is a programmable thermostat with universal compatibility for 2H/2C or 3H/2C HVAC systems. It is available in new condition as an open box item, providing reliable functionality. Free shipping is included with this purchase. Suitable for homeowners or professionals seeking to enhance heating and cooling control with programmable settings for energy efficiency and comfort. This thermostat supports multiple stages, making it adaptable for various setups. For complete specifications and installation notes, refer to the listing details. TopTech TT‑S‑755R / T755S Thermostat – Universal 2H/2C or 3H/2C – Programmable. Condition: New – Open box. Listed at 75.00 USD. Model: TT‑S‑755R / T755S. It supports up to2 Heat / 2 Cool (conventional) or3 Heat / 2 Cool (heat pump) operation. Universal thermostat:2H/2C conventional or3H/2C heat pump. This model is compatible withwired indoor or outdoor remote sensors, making it ideal for dual‑fuel, radiant heat, or systems requiring remote temperature sensing.