A multi-point networking portable air sampler is designed using direct sampling methods based on wireless remote sensors. It enables flexible air pollution monitoring and sampling

and provide an effective sample for diffusion of atmospheric pollution. It can achieve flexiable control of synchronization sampling and delay sampling by multi-sampler

complete sampler networking. Using PWM mode to adjust sampling rate of sampler

sampling rate can be modulated at range of 0. 1

0. 8 L / min. The sampler is tested

and results show that the multi-point network sampler can achieve reliable and automatic air sampling.