Quantity   Component name
2 × Moteino RF enabled Arduino compatible processor. Love 'em!. http://lowpowerlab.com/moteino/
1 × Raspberry Pi 2 Host system and web interface
1 × JSN-SR04T waterproof Ultrasonic sensor looks like a car US sensor, but comes with 75ohm coax cable and a driver/receiver board. single sensor.http://www.ebay.com/itm/321714364470
3 × DS18B20 digital temperature sensor waterproof versions. http://www.ebay.com/itm/171812319683
1 × 3V to 5V 1A DC-DC Converter Step Up Boost for Ultrasonic driver power http://www.ebay.com/itm/DC-DC-Converter-Step-Up-Boost-Module-3V-to-5V-1A-USB-Charger-for-MP3-MP4-Phone-/390673638390
1 × Antenna for Raspberry Pi base station connected to the gateway Moteino in the RPi case. http://www.ebay.com/itm/868MHZ-915MHZ-GSM-3G-Small-Sucker-Omnidirectional-High-gain-Antenna-ZF-Hot-/281665089013
2 × Two Waterproof boxes, two sizes. http://www.aliexpress.com/item/Free-Shipping-115-90-55MM-Waterproof-Clear-Cover-Plastic-Electronic-Project-Box-Enclosure-Case/2023920143.html