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Item specifics
  • Storage Channel: Depends on radio
  • Model Number: SF-401 Plus SF401 Plus
  • Maximum Range: 3km-5km
  • Talk Range: 5-8 km
  • Is_Display: Yes
  • Type: Accessories
  • Dimensions: 70*25*90mm
  • Frequency Range: Depends on radio
  • Walkie Talkie Type: Portable
  • Material: Plastic
  • Power Supply : Built-in 600mAh Li-ion Rechargeable Battery
  • Testing Range: 27MHz-3000MHz
  • Function : Only used for Digital
  • Voltage: 3.7V
  • Tested Tone: CTCSS/DCS
  • Operating Temperature: 20-+60 degree
  • Accuracy Class: 0.0001MHz
  • DIY Supplies: Electrical
  • Product name : Frequency Counter Meter
Product Description


SF401 Plus 27MHz-3GHz Portable Frequency Counter Meter SF-401 Plus with CTCSS/DCS Decode Decoder For DMR Radio Walkie Talkie








  • The frequency meter capable of measuring the parameters of the continuous carrier signal walkie-talkies, with signal strength indicator.
  • It is the tool of choice for maintenance personnel, test frequency and signal strength of wireless enthusiasts.
  • This portable frequency choose is designed for counting continuous wave signal comes from Two-way Radio.
  • There are easy ranges for you to choose. The ranges cover most of the frequency of the two way radios you want to measure.
  • Its four-button control is easy to use and its small size allows you to carry it anywhere you like.
  • LCD Dim level setting
  • Frequency digital 0.000 or 0.0000
  • Auto power off 1-9 minutes
  • 4 buttons control


Brand Name



Battery Build-in



Flash Light




320*240 Pixels


Frequency Range



Li-ion Battery build-in

3.7V 600mAh


Current consumption



TCXO crystal Oscillator



Charger in

Micro USB +5V


Impedance input

50 ohm(BNC)





Dimensions size

70*25*90mm / 2.76*0.99*3.54in




After receiving your payment, Orders will be shipped within 48 working hours. (Available for models  in stock)

If you make the payment on Friday, Saturday or Sunday, We\'ll ship it next Monday. (weekend does not work)

Shipping for most Europe, America East Asia, South Asia 7-25 working days

Brazil , South America, Some Europe county up to 6-9 weeks due to strict Custom Inspection

Russian,USA and Canada Local shipping, 5-15 working days, PS, remote city will take longer than city


We offer 1 year warranty for radio body, 6 months for battery, charger & other accessories.

Shipping cost for warranty repair/replace have to pay by buyer, we bear 1 way shipping cost

PS;We will try our best to help you buyer solve customs problem, but custom cost in buyer\'s local city depends on local policy, buyer needs to pay customs cost if needed


We offer 7 days replace and refund policy for defective items

Please double check parcel face to face when you get the parcel

If there is defective item after checking, Please feel free to contact with us via message

Buyer return for defective item at his own cost and we will ship the replace item to you at our shipping cost. after confirmed defective we will offer refund or compensate after negotiation


We really hope that you can leave us Positive Feedback, If you are not satisfied our serice and product

Please feel free to leave message for us or contact with us online, we will deal with it within 2 days

Please leave positive feedback for a satisfying purchase, 5 Stars is Welcome

Please DO NOT leave Neutral or Negative feedback before contact us if you have any complaint

Because Negative feedback cannot solve any problem at all

We will try our best to service you




Packaging Details
  • Unit Type: piece
  • Package Weight: 0.5kg (1.10lb.)
  • Package Size: 1cm x 1cm x 1cm (0.39in x 0.39in x 0.39in)
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Packaging Details
  • Unit Type: piece
  • Package Weight: 0.5kg (1.10lb.)
  • Package Size: 1cm x 1cm x 1cm (0.39in x 0.39in x 0.39in)
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