RF Solutions ZETA20-8S RF RF Module RF Transceiver 868MHz, 3.6V

The RF Solutions ZETA20 modules are extremely cost effective and high performance radio module based on the silicon labs Si4463. This module includes crystal, RF changeover switch, impedance matching network and track layout provide a simple digital interface and direct antenna connection. This enables a plug in RF solution with maximum efficiency. These modules will suit one to one or multi-node wireless links in applications including car and building security, POS and inventory tracking, remote process monitoring.

It has a 4 km range
Tiny form factor is 16 mm x 16 mm