Heat-Pump Wall Thermostat with Display HEAT PUMP (split unit) thermostat DIGITAL DISPLAY. MANUAL CHANGE OVER DIRECT LINE VOLTAGE 230 VAC C128HD thermostat for Heat Pump units. Controls 3 speed FAN, R.V. & compressor contactor. Compressor Anti short cycle timer of 3.5 minutes is build-in. Green LED indicator for power on. Blinking of green LED indicates standby mode. Optional: external temperature sensor. Operation Instructions   Download Catalog   [fusion_button link="https://rolbit-thermostat.com/wp-content/uploads/2022/01/C128HD_Operation_Instructions_regular_ENG.pdf" title="" target="_self" link_attributes="" alignment="" modal="" hide_on_mobile="small-visibility,medium-visibility,large-visibility" class="" id="" color="default" button_gradient_top_color="" button_gradient_bottom_color="" button_gradient_top_color_hover="" button_gradient_bottom_color_hover="" accent_color="" accent_hover_color="" type="" bevel_color="" border_width="" size="" stretch="default" shape="" icon="" icon_position="left" icon_divider="no" animation_type="" animation_direction="left" animation_speed="0.3" animation_offset=""]Operation Instructions[/fusion_button] [fusion_button link="https://rolbit-thermostat.com/wp-content/uploads/2022/02/C128HD.pdf" title="" target="_self" link_attributes="" alignment="" modal="" hide_on_mobile="small-visibility,medium-visibility,large-visibility" class="" id="" color="default" button_gradient_top_color="" button_gradient_bottom_color="" button_gradient_top_color_hover="" button_gradient_bottom_color_hover="" accent_color="" accent_hover_color="" type="" bevel_color="" border_width="" size="" stretch="default" shape="" icon="" icon_position="left" icon_divider="no" animation_type="" animation_direction="left" animation_speed="0.3" animation_offset=""]Download Catalog[/fusion_button]