Gecko 0612-221045-440 is ideal for controlling the temperature of spas with no heater. It provides superior heat recovery (thermal transfer) and is an effective replacement for older TDI / Tridelta / Tecmark thermal transfer systems, as well as the discontinued Len Gordon HT-1000Y2K and Spa Builders LX-05 systems.

This control pack is not a circ pump ready, with no auxiliary topside, no fiber optic, and not Wi-Fi compatible. The kit only supports one pump or appliance. With this system, you can maintain comfortable water temperatures without adding a heater to your spa.

• Circ Pump Ready - No
• Auxiliary Topside Ready - No
• Fiber Optic - No
• Accessory Ready - No
• Wi-Fi Compatible - No
• Does not incude keypad and topside
• Supports 1 Pump or 1 appliance
• Comes with 60Hz and 115v Supply Voltage
• Dimensions: 12" L x3-3/4" D x 7-3/8"H

Fitment guidelines:
For use with in.yj-2 model

Additional Information:
Alternate part numbers - 58-337-5015, 0612-221034, 3-72-7052, 0612-221001, 0612-221006, 0612-221011, 0612-221034-315, 0612-221034-317