Què inclou el provador de gas d'oxigen

Portable monitor for detect O2, temperature . With  

Acoustic, optical double alarm, can set the alarm value, an alarm sound is divided into 80 dB and built-in Rechargeable lithium-ion battery, 3.7 Volts (include),Widely used in factory, home, office, and public place the package included is as below: 

1 monitor de gas d'oxigen AR8100

1 manual d'usuari

1 brotxa de transport

1 bateria de liti recarregable de 3,7 V

Carregador de bateria 1pc