SPECIFICATIONS

Automatic Gain Control: Automatically reduce gain when isolation is insufficient

Automatic Level Control: ALC Control makes device run longer

Big Coverage: Up to 800sqm. without barried

Brand Name: Callboost

Callboost CB70B Four-band booster: Ultra Signal Booster gsm 2g 3g 4g

Callbosot Signal Booster: gsm 2g 3g 4g signal booster repeater

Cellular Network: GSM 2G/3G/4G signal network

Combination 1: 900 1800 2100 2600 MHz

Combination 2: 850 1700 1900 700B28 MHz

Combination 3: 900 1800 2100 700B28 MHz

Combination 4: 900 1800 2100 800B20 MHz

Combination 5: 900 2100 2600 800B20 MHz

Communication: Internet 2g 3g 4g network LTE internet for phone,Mobile phone communication nework

Four Band Signal Booster: 4-band network booster

Frequency Band: More frequency to choose

GSM 2g 3g 4g repeater: Enhance 2g 3g 4g LTE network and voice

GSM amplifier: Mobile signal amplifier cellular repeater

High Gain: 70dB

High Tech Function 1: Auto Sleep Function

High Tech Function 2: Anti-interference technology

High Tech Function 3: Auto detection of isolation

High-concerned chemical: none

Improvement: Improve GSM 2G/3G/4G HD call voice & network

Item Type: Booster

Model Number: CB70B

NO.1 High Tech Booster: Intelligent technology Equipment

Origin: Mainland China

Output Power: 20dBm

Power Supply: AC:100~240V, 50/ 60Hz, DC:5V 2A

RF Connector: N-Female

Use to: Enhance mobile phone gsm 2g 3g 4g

Wireless Function: No

DEVELOP NEW TECHNOLOGY,

Be able to increase signal ceoverage efficiently.

QUAD BAND SIGNAL BOOSTER

WITH THE BEST HIGHEST COST PERFORMANCE

  70dB High Gian,20dBm Great power.

CB70B product supports B1B3B7B8 / B1B3B8B20 / B1B3B8B28 / B1B7B8B20 / B2B4B5B28 bands and supports multiple carrier signals such as 2G, 3G and 4G. It features a cast-aluminum chassis with good heat dissipation, beautiful appearance, simple structure, simple installation and maintenance, high gain, high output power, and a coverage area of up to 800 square meters, making it the best option for mobile phone coverage in residential areas, factories, malls, supermarkets and more.It supporting 2G, 3G, 4G networks in most countries in Europe, Africa, Middle East and Southeast Asia,etc.

MAIN FEATURES MAKE IT PERFECT

EIGHT major functions are included in the amplifier:

🔴ALC FUNCTION

Automatic power control function to keep the signal stable;

🔴AUTOMATIC SHUTDOWN FUNCTION

Auto shuts down the output when severe self-excitation or overload, to avoid equipment damage;

🔴UPLINK SLEEP FUNCTION

The device enters sleep state when there is no user in the coverage area, reducing interference to the base station;

🔴HIGH-INTENSITY COVERING

Up to 800sqm without any barriers, available for apartments, offices and garage, which is great for your needs.

🔴REAL-TIME OLED SCREEN DISPLAY

Clearly show the real-time signal strength and equipment operation parameters;

🔴LOW NOISE & RADIATION

The amplifier works with low noise and low radiation, which can effectively protect your health;

🔴CAST ALUMINUM CHASSIS & ICE-METAL MATERIAL

Adopts a cast aluminum chassis and ice-metal material helps cooling, and the outer casing absorbs heat discharge, which is durable and safe;

🔴SETUP-FREE. READY TO USE

           AUTO SLEEP FUNCTION            

Automatically sleep when there are no users in the coverage area, reducing interference to the base station.

HOW TO PROTECT OUR QUALITY ?

Manufactured in our own factory.

• Each signal booster will be strictly tested in serval time to ensure performance.

• Booster will be test several times before we send.

3 major indispensable procedures with PRODUCTION,DEBUGGING,AGING PROCESSING for STABLE BOOSTER'S SIGNAL.

It is emphasized that the products have undergone careful research and development, high-tech production, strict testing, and factory aging treatment to stabilize the signal, and each pass is strictly controlled to provide good quality.

SIGNAL BOOSTER STEADY,SUPER FAST INTERNET SPEED.

Each product is tested in different procedures for R&D, production, debugging, and delivery by professional instruments.
We create superior device with the best materials to defeat weak signal.

 PACKAGE LIST

1.CALLBOOST BOOSTER

2.POWER adaptor

3.Instruction manual

* Each with 1pcs.

STILL CONFUSED BY... ?

DO YOU WANNA TRY THIS SIGNAL BOOSTER ?

Purchase! Enjoy fast shipping.Just have a try if your cell phone signal is poor!

Anyway you can enhoy the free return and full refund for no reason.

The service is available for some countries, which are Russia, Israel, Spain, France, Brazil, Italy, Poland, Germany,Saudi Arabia, Netherlands, Australia, etc.

 INSTALLATION STEP

• Step1:Search a position where can receive good signal(stronger than -70dB)Parallelly installing the outdoor antenna on that location,towards to the base station or cell tower.

• Step2: Use 10m cable to connect the outdoor antenna and singal booster.Please ensure they were tightenned joints,connected well.

• Step3:Connect the indoor antenna and the singal booster.

• Step4:After finished all parts then check weather all connectors well,then can turn on the power
  

Two antennas need to separate by brick wall. The distance between them at least 10 meters.

 HOW TO CHOOSE THE SUITABLE BOOSTER

How strong is the OUTDOOR signal?
Please make sure that you can receive at least 2 bars signal in the place where you plan to install the outdoor antenna.

Note:Please Off Wifi to display the network type at the top of the screen.
If it shows "0" or "unknow",please test more times outside at the signal strongest position.

Shipping

● We will send your parcel as per your choice of logistics as soon as posiible after payment confirmed, within 48 hours for normal,Except weekend and Chinaese holidays.

If you want another shipping way,please feel free to contact us,we will provide the most suitable shipping for you.

● Please provide your correct address,full name,and zip code.

● Tariff is an obligation that citizens of every country should fulfill. It is buyers responsibility to pay for the tax and custom clearance.

● If you do not receive the parcel within the protection time, please contact us at the first time, we would check it for you or extend the protection time.

After-sale service

● Please note that we always check and test the product twice before shipping and pack them well as far as possible. However we could not control anything during the long transit. Therefor, the product is broken at receiving, please contact us, we would resend you a new one.

● Our product have one year warranty. But please be cooperative to provide video or pictures to show exact the problem, and listen our suggestions for the installation.

● Any problem about the parcel or the prodcut, please feel free to contact us at the first time, we would be very glad to help and reply ASAP.

Feedback

● If you are satisfied with our service and product, we would be very appreciated that you put us five star and positive review. You could also recommend it to people who needs it. We would present coupon as little gift to you for thanks.

● For any reason you are not pleased with us, please contact us before left a neutral or negative feedback, we will do the best to solve you problem as soon as possible.