SenSpot™ 4-Channel Temperature Sensor Ultra-Low Power Precision Sensing & Wireless Communication Typical Applications  Outdoor ambient temperature monitoring  Concrete and steel temperature monitoring Features & Benefits  Long lifetime: (battery life of 10 years)  Multi-channel synchronized sensing: Up to 4 channels Wireless communication: IEEE 802.15.4 Lightweight (about 550 g) o Wireless transmitter: 200 g (7.1 oz.) o Sensing probes (typical 4 x 10ft probe cable): 350 grams (12.3 oz.) Adjustable sampling interval Resolution: 0.1°C (0.05°F) wireless synchronization and ultra-energy-efficient wireless communication. SenSpot™ is designed to operate maintenance-free for more than a decade. After installation, SenSpot™ does not need calibration, battery replacement, or any other maintenance for at least 10 years. Due to small size and lightweight, SenSpot™ sensors can be applied easily to as many critical spots on a structure as needed, with minimal installation effort. Working temperature: -40°C to +65°C (-40°F to +150°F) Long communication range: 1.0km (0.62mi) free space Customizable probe length: up to 6m (20ft) Ingress Protection: IP65, weatherproof and protected against rain, snow, and UV exposure Small size: o Wireless transmitter: 140.21mm (5.52”) x 60.5mm (2.382”) x 32.5mm (1.28”) Temperature SenSpot™ can be used to monitor temperature on structural elements of bridges, buildings, etc. Power source: replaceable lithium-ion battery Description SenSpot™ provides an easy to install, scalable solution for distributed structural integrity monitoring. SenSpot™ Temperature Sensor uses Resensys’s proprietary technology for reliable and accurate measurement, large-scale sensing,

Wireless Transmitter Dimensions Figure 1: Dimensions of the SenSpot™ 4-Channel Temperature Sensor, all dimensions are in mm [inch]