Advantages: High precision, effectiveness, safety, wide range.
Convenient operation, fixed value operation, timed operation, automatic stop.
Dedicated function keys enable temperature setting.
Auxiliary menu, realize over-rise alarm, deviation correction, menu locking.
Figure 1, double-layer insulation door design: Menzi adopts double-layer thermal insulation design, which is more comfortable for experiments.
Fig. 2, multi-function control panel: vertical double air duct air jacket, turbine centrifugal forced air supply, more uniform temperature.
Fig. 3, exhaust hole: multi-functional exhaust hole design
Fig. 4, multi-layer space multi-layer partition design: the partition spacing can be adjusted, which is convenient for placing experimental items of different heights.

| Model | Rated power | Content volume | |
| WHL-30B/WHLL-30BE | 0.8KW | 30L | |
| WHL-45B/WHLL-45BE | 1.0KW | 45L | |
| WHL-65B/WHLL-65BE | 1.5KW | 65L | |
| WHL-125B/WHLL-125BE | 2.5KW | 125L | |
| Other parameters | |||
| Convection mode | Natural convection | ||
| Operating temperature range | RT+10~300℃ | ||
| Temperature resolution | 0.1℃ | ||
| Temperature fluctuations | ±1.0℃ | ||
| Temperature distribution accuracy | ±3.5% | ||
| Built-in | Stainless steel plate | ||
| Exterior | Cold-rolled steel plate, surface resistance * quality coating | ||
| Insulating materials | Aluminum silicate fiber | ||
| heater | Nichrome heating wire OCr27A17Mo2 | ||
| Temperature control method | Type B: Digital tube double-row PID;BE type: LCD double-row PID | ||
| Temperature setting method | Tap the four buttons to set it | ||
| Temperature representation | Type B: Measured temperature display: 4-digit digital upper display, set temperature display: 4-digit digital lower display
BE type: Measured temperature display: liquid crystal upper display, set temperature display: liquid crystal lower display | ||
| timer | 0~9999 minutes (with timed waiting function) | ||
| Run the function | Fixed-value operation, timed operation, automatic stop | ||
| Program mode | Standard, single-stage temperature control and program temperature control can be converted to each other, 50 experimental programs can be stored, each program can be set to 50 steps, each step can be set 0-6000 minutes can be adjusted | ||
| Additional features | Deviation correction, menu button locking, power failure compensation, power failure memory (BE type: Overlift preventer) | ||
| sensor | pt100 | ||
| Safety devices | Overlift Alarm (BE Type Overlift Arrester) | ||
| power supply | AC220V/3.6A 50/60Hz | ||