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 | Matching | ||
| 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 | ||