Trianco Photoresistor Part No: 221318

Genuine Trianco Photoresistor

• The photoresistor is an essential part of any central heating system.
• The photoresistor is used to monitor the ongoing flame in the burner unit.
• When the flame goes out due to failure the photocell will send a command to the control box to power down the unit.
• Satronic MZ770S

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