Add outdoor temperature and humidity to any
What if your thermostat not only gave you indoor temperature but also displayed outdoor temperature and even the humidity outside? It’s all made possible when you add this wireless outdoor air sensor to any RedLINK-enabled thermostat with Total Connect Comfort Services. Installation is simple and easy. It’s completely wireless — you don't have to run wires outside. The battery is worth noting, too. It has a one-year battery life with a two-month warning. You don’t need a reminder like Daylight Savings Time. The sensor tells you when the battery needs replacing.