Quantity   Component name
4 × NimbeLink Skywire 2G Cellular Modem http://nimbelink.com/2g-cdma-1xrtt/
4 × Sparkfun Arduino Pro Micro 3.3v version - https://www.sparkfun.com/products/12587
4 × XBee Breakout Board & XBee Socket https://www.sparkfun.com/products/8276, https://www.adafruit.com/products/366
4 × Selectable Output Power Supply https://www.adafruit.com/products/1448
12 × 16mm Illuminated Momentary Pushbutton https://www.adafruit.com/products/1479
1 × PolyMax Filament To 3D Print the enclosures - http://www.polymaker.com/shop/polymax/
4 × Taoglas FXP40 Antenna http://www.taoglas.com/shop/fxp40-2g3g-flexible-antenna/
4 × LM317 Adjustable Voltage Regulator https://www.digikey.com/product-detail/en/LM317T/LM317TFS-ND/458678
4 × Panel Mount Barrel Jack https://www.adafruit.com/products/610
2 × Sparkfun Snappable ProtoBoard https://www.sparkfun.com/products/13268
2 × Female Headers https://www.sparkfun.com/products/115