Aube by Honeywell CT240-01/U Low Volt Thermostat Phone Controller,Aube by Honeywell,CT240-01/U" /> Compatible with the following Aube thermostats: TH115, TH135, TH140, TH141, TH144, TH146, TH148LE-P Use a touchtone phone to heat your cottage or home just in time for your arrival Connects directly to existing phone line and is password-protected for secure access Activated by home and cell phones and is compatible with answering machines Power supply - 9 VAC and 60-Hertz (adapter and phone cable included)