Landslides are natural disasters which have forced us to prepare with major mitigation efforts. One such effort is the development and implementation of the landslide monitoring system (LMS). Most LMSs are installed permanently in landslide-prone locations for long-term monitoring purposes. In this paper, the design of a mobile LMS with high flexibility feature is presented. The proposed system comprises a mobile gateway, mobile tiltmeter sensors, and mobile extensometer sensors, in which they are configured to form a wireless sensor network. In this work, the sensor's behavior and communication performance between sensors and gateway are characterized. Experimental results show the linear responses of both tiltmeter and extensometer sensors. While reliable communication between sensors and gateway are obtained for the maximum range of 168 m on the line-of-sight condition, and 160 bytes data payload.