Totaline P474 thermostats are available for purchase online at ProThermostats.com, eBay, 1source2buy.com and Amazon.com, as of March 2015. Only 1source2buy.com carries both programmable and non-programmable models.
Amazon.com, eBay and ProThermostats.com sell the non-programmable P474-0130, which is battery operated and has no backlight. The model's temperature range is 45 to 90 degrees Fahrenheit.
More modern models are available on 1source2buy.com that do not require batteries and have auto-changeovers and backlights. The temperature range of these models is 35 F to 99 F. The two programmable models have the capacity to save four time periods of warming or cooling.
Thermoline no longer makes any P474 model.