... effective communication channels, conversation can be stable in any environment5. Improved frequency-hopping technology,super error ... CE, CCC, FCC, R&NTTE7. Ultrashort built-in antenna design, fashionable and attractive shape8. Super-infrared ... image storage, photo taken function wireless video door phone,wireless video door bell, delTA-888Power supplyDC 5vCurrrent150mASNRVoice55dBWorking temperature- ...