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10Pcs 1100 Meter Long Distance NRF24L01+PA+LNA Wireless Module Board With Antenna Desription: NRF24L01P + PA + LNA Division for the ultra-long-distance data transmission, specially developed high-power and high sensitivity wireless module 2.4G ISM band NRF24L01P + PA + LNA wireless module to work in the license-free that can be point-to-point applications or be composed of a star network. Digital transmission chip NRF24L01+ with the Division of Professional Design professional full two-way RF power amplifier high power PA and LNA chip, RF switches and band pass filters, makes effective communication distance greatly expand. RF part, it has been done a lot of optimization matching debugging. The emission efficiency to achieve the highest harmonic minimum and make NRF24L01P + PA + LNA wireless module of RF interference to the external equipment reaches minimum, while not susceptible to interference from other devices. NRF24L01P + PA + LNA wireless module integration is extremely high, the size is 41mm x 15.5mm to make conveniently embedded. Package included: 10 x 1100 Meter Long Distance NRF24L01+PA+LNA Wireless Module Board With Antenna

Buy 10Pcs 1100 Meter Long Distance NRF24L01+PA+LNA Wireless Module Board With Anten for R857.25

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10Pcs Mini 1A Lithium Battery Charging Module Board With USB Interface Description: Charging method: linear charge 1% Charging current: 1A adjustable Charge accuracy: 1.5% Input voltage: 4.5V-5.5V Full charge voltage: 4.2V Charging indicator: Red charging green full charge Charging input interface: Mini USB Working temperature: -10C to +85C Reverse: NO Size: 25 x 19 x 10mm Note: Ampere meter can only be connected to 5V input end of the module. It is better that the charging current is 37% of the battery capacity. If you charge to the battery of 1000mAH, current of 400 is enough. The connection wire should not be too long. Make sure the connect point is good. If the input voltage is too high, like 5.2V, the current will be less than 1000mA, it is normal. It is protection function, Auto-substract the charging current to avoid burn damage to chip. Input reverse has no effect on the chip, but the output (battery terminals) reverse will burn chips. Applications: This module is used for single-or multi-section parallel lithium lithium rechargeable battery, charging from the USB port to take power. Package included: 10 x 1A lithium battery charging module

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Feature: – Operating voltage:DC 4.5 – 30V – Measure voltage: DC 0 – 100V – Minimum resolution(V): 0.1V – Measure current:50A (require external shunt) – Minimum resolution(A): 0.1A – Operating current: – Display: three 0.28" LED digital tube – Display color: Red and Blue (two-color display) – Dimensions: 48 x 29 x 21mm – Mounting cutout: 45.5 x 26.5mm – Refresh rate: about 500mS / times – Measure accuracy: 1% (± 1 digit) – Operating temperature: -10 to 65°c – Operating Humidity: 10 to 80% (non-condensing) – Working pressure: 80 to 106 kPa – Applications:Suitable for automotive/electric cars/motorcycles battery monitoring or other products voltage current measurement – Wiring: Black line (thin): vacant or buck circuit (module) negative Red line (thin): power supply+ Black line (thick): COM, common measuring Red line (thick): PW+, measuring terminal voltage input positive Yellow line (thick): IN+, current input+ Notice: – The voltage between the thin red and thin black lines must be within DC 4.5-30V – The ammeter can only be connected to the negative of the device under test – Exceeds 5A, long-term full load working continuously, it is recommended that the measurement side of the leads are directly soldered to the socket – When the black thin line vacant, it is better to use insulating tape around the exposed part of the wire, to prevent short circuits – If just be used as a voltmeter, it is recommended that the yellow line and the black line were connected together, to prevent the ammeter digital flashing Package included: 10 x Digital Volt Amp Meter 10 x 50A / 75mV DC Current Shunt

Specifications: Color: Black Shape: Cylindrical Capacitance: 10 Farad Max Voltage: 2.7V ESR: 60mΩ permissible voltage: 2.5V Lead wire type: Same direction Diameter: 10mm Length: 26mm Allowable deviation: -20~40 (%) Dielectric material: Super farad Frequency: Low frequency Application scope: Low voltage Features: - Good quality - High cost performance - Low temperature and low internal resistance and low leakage current - The volume is small, but the capacity is big. The capacity is bigger than the same volume electrolytic capacity about 30~40 times. - The power density of the capacitor is 10~100 times of the battery. It can even reach about 10kw/kg. - Charging speed is quick. - With super long life which is up to more than 100 thousand times, and is more than 10-100 times the battery. - Less pollution. Application for: - CPU intelligent home appliance, meter, tax control machine, controller, air conditioning, recorder, MP3, car audio, telephone, solar lights, real-time clock etc. - Power supply of small power devices, such as: intelligent water meter, gas meter, disinfection cabinet, electronic door locks, solar equipment, digital set-top boxes, toys, etc.; - Electric starting system, with the battery used in various internal combustion engines such as cars, tanks, diesel locomotives, can effectively protect the battery and prolong its service life, reduce the power loss with capacity, especially in low temperature and battery case, ensure reliable start Package included: 10 x Super farad capacitor

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