Tesunho has two items without display TH-510 and TH-518L.Here show you the differences between them.

First,Outlook

TH-518L is simpler in appearance than TH-510.SOS button on the TH-510 has been moved to the right,making it easier to touch in a crisis.

Second,Channels Switch

On the top of TH-510,Channels Switch knob has been added,which allows you to quickly change channels,If you don't know how to switch channels,this will give you a very big help.

Third,Function

TH-510 is more intelligent.It has man down,noise reduction,and NFC optional.

Mandown  Mandown pre-alarm will be triggered when the radio is horizontal more than 10s.That mean if the user fell and injured when working alone.An SOS signal will be sent.

Noise Reduction  Noise reduction is automatically turned on when in use.You can hear the other person's voice more clearly during the call.

NFC  TH-510 with the optional NFC function can report its position and status by touching the NFC tag during patrol.

Fourth,Battery

The battery specification of TH-510 is 3.6V,5000mAh,when TH-518L’s is 3.63V, 5200mAh.

Fifth,Accessory

TH-510 supports USB to Type-C charging and TH-518L uses a DC Barrel Style charger.What’s more,connector of TH-510 is K type when TH-518L is M type ones.

Overall,TH-510 is suitable for green hand users who require easy operation and work in outside,will benefit from those function like noise reduction and mandown.TH-518L should be better for users which did not need so much function.