Introduction to GENT fixed frequency air to water heating system Air to water heating system is a heat pump unit that uses the heat in the air as the heating source, absorbs the heat in the air to prepare hot water. Combined with the indoor terminals and the hot water produced by the unit, the indoor space heating can be achieved. The thermo pump heating system is divided into two types: fixed frequency unit and variable frequency unit. This category mainly introduces the fixed frequency type. What is a fixed frequency heat pump house heater? The main difference between fixed frequency heaters and variable frequency heaters lies in the frequency at which the compressor in the unit runs. The compressor in the fixed frequency heatpump furnace runs at a fixed frequency. When the indoor temperature reaches the set value, the unit is completely shut down, and the unit restarts after the temperature drops. The operation mode of the fixed frequency Air Source Heat Pump Heating unit is a continuous cycle of "start-stop". Unit advantages 1. Initial equipment investment can save 30~50% 2. Low maintenance cost (no risk of inverter module failure) 3. Suitable for areas with low electricity prices 4. Recommended for: intermittent heating scenarios (such as weekend villas), mild climate areas (areas with the lowest temperature in winter above -5℃) Unit disadvantages 1. The compressor starts and stops many times, which increases power consumption and affects the service life of the unit. 2. The room temperature drops significantly during the winter defrosting period. 3. The COP of this heat pump heater is lower than that of the variable frequency unit. Heat Pump House Heater,Heat Pump Heater,Heat pump Furnace,Thermo Pump Heating,Electric Heat Pump Water Heaters GUANGZHOU GENT NEW ENERGY TECHNOLOGY CO., LTD , https://www.gentgz.com
Airport Body Scanner Metal Detector
**MD3003B1 Handheld Metal Detector – Affordable Body Scanner for Security Checks**
**Model NO.:** MD3003B1
**Usage:** Body Security Check
**Battery:** 9V, Not Included
**Tuning:** Automatic
**Indicators:** Audio/Vibration
**Controls:** Power/Off Button
**Advantage:** Lightweight
**MOQ:** 25 PCS
**Warranty:** 1 Year
**Trademark:** N/M
**Transport Package:** Carton Box
**Specification:** 25 pcs per carton
**Origin:** China
**HS Code:** 8543709100
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The **MD3003B1 Handheld Metal Detector** is a cost-effective and reliable tool designed for body security checks. It is widely used in military operations, especially in landmine detection, due to its compact size and high sensitivity. This model is ideal for environments where quick and accurate metal detection is essential.
**Key Features of MD3003B1:**
- **Miniature Design:** Easy to carry and store, making it perfect for field use.
- **Simple Operation:** User-friendly interface that requires minimal training.
- **High Sensitivity:** Detects even small objects like pins or needles with ease.
- **Adjustable Sensitivity:** Can be customized based on the environment and application.
- **Dual Alarm System:** Provides both sound and vibration alerts for enhanced visibility.
- **Long Battery Life:** Operates for up to 40 hours on a single 9V battery.
- **Low Power Consumption:** Only 50mA, ensuring efficient energy use.
**Technical Parameters:**
| Feature | Specification |
|----------------------|------------------------------------|
| Power Supply | 9V (Lasts up to 40 hours) |
| Operating Frequency | 20KHz |
| Dimensions | 54*52*28 cm / CTN |
| Alarms | Light and Vibration |
| Current | 50mA |
**Applications:**
- Airports, railway stations, and ports for security screening.
- Prisons, customs, and border control agencies.
- Medical and food industries for quality inspection.
- Jewelry factories for precious metal detection.
- General security checks in public and private sectors.
This handheld metal detector is not only durable but also highly efficient, making it a top choice for professionals who require a reliable and affordable solution for metal detection. Whether you're conducting routine security checks or working in high-risk areas, the MD3003B1 offers excellent performance at an unbeatable price.
Therefore, it can be said that the fixed frequency electric heat pump water heaters can meet the demand for indoor heating, and this unit also has its advantages and disadvantages. Users can comprehensively consider your personal needs and the advantages and disadvantages of the unit to determine whether this unit is really suitable for you. If it is suitable, you can take it into consideration.