BTHC-302 (4°C~99°C)
BTHC-303 (4~105°C(Minimum setting scale: 0.1°C))
BTHC-304 (4~105°C(Minimum Increment: 0.1°C) SOAK Low Temperature Conservation Function)
BTHC-305 (4~105°C(Minimum Increment: 0.1°C) SOAK Low Temperature Conservation Function)
BTHC-307 (0°C-100°C)