Qué incluye el probador de gas de oxígeno

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 de oxígeno AR8100

1 manual de usuario

1 broche de transporte

1 batería de litio recargable de 3,7 V.

Cargador de batería 1pc