This application features two 1000pads-mini-system boards, 2 Xbee modules and a Microchip Pic16F88 to control two relays and read a temperature sensor over-the-air. The final assembly is simple and tiny: boards can be placed anywhere using a common 9V Battery. Relay switching will be made remotly from a pc, the temperature sensor on board will be read from pc too. The programming language used for the MCU is Hitec-C lite version (I've used 9.65PL1 version that comes with MPLAB IDE 8.40).