Tip one：How to maintenance the machine?
1. After long-term use the machine, the buttons, control knob and the shell will become dirty, please take down the control knob from the radio, and use the neutrality lotion(Do not use the intense caustic chemical medicament) and the wet cloth to clean the shell. Use such as alcohol, spray or oil-made chemical medicament may cause the damage to the shell of the radio.
2. Gently take and put down the radio, do not hold the radio by antenna.
3. When you are not using the accessories such as earpiece, please cover the dustproof lid.
Tip two：Notice about when using the radio antenna.
1. You must use the Hytera's original or recognized antenna. Unrecognized, refitted or accessory-added antenna may cause damage to the radio, and will violate the regulations or laws.
2. When using the radio, do not hold the antenna by hand.
3. Do not screw down the radio antenna, or the power diode will be burned when transmitting.
4. Do not use the damaged antenna. When transmitting, if the damaged antenna touches the skin, may cause slight burning to your skin.