Features:

*Easy Installation and usage, suitable for home, office etc. places

*Uses alkaline battery with over 3 year battery life

*Rustproof metal problem with long service life

*Hush and test button

*Sound and flash alarm

*MCU processing alarm signal, precision and swift performance

*SMT manufacture technology, good stability

*Simple style atmosphere

*Both Semi finished PCBA and Finished detectors  tested one by one before ex-factory