Robertshaw 780-845 Universal Intermittent Pilot Lockout Ignition Module. The 780-845 is a genuine product manufactured by Robertshaw, who is a dedicated producer of home and commercial thermostats. This particular product is a Pilot Ignition Module which has a main purpose of opening the pilot valve and initiating the spark to run your home heating application. The module allows for better control over the pilot light and its function. For example, the module will monitor whether or not the pilot is lit (on) and if not it will shut the gas valve in order not to leak unused gas into the home. The lockout works by controlling the ignition attempts when the pilot has trouble lighting. This Pilot Ignition Module is an amazing buy and will be a great addition to your heating system within your home. Its safety features are great for anyone and should be high on the list when it comes to protecting your home. The module also communicates with the thermostat and allows you to change things such as the lockout feature from the thermostat itself.