Temperature Probe, NTC Type, 1K Ohms @77F, 177inches, Plastic Probe End NRE #169102
177" Carel Blue or Black Probe Sensor for Select A, GDS, and GDC Units , 2 piece set
NRE #169102
Avantco # 17813893, 17813894
for : A-12F-HC, GDC-49F-HC, GDC-40F-HC also for select A, GDS, and GDC units