diff --git a/pid/zone.hpp b/pid/zone.hpp
index 12e47a6..179b24d 100644
--- a/pid/zone.hpp
+++ b/pid/zone.hpp
@@ -74,6 +74,7 @@
     void updateFanTelemetry(void) override;
     void updateSensors(void) override;
     void initializeCache(void) override;
+    void setOutputCache(std::string_view, const ValueCacheEntry&) override;
     void dumpCache(void);
 
     void processFans(void) override;
@@ -82,6 +83,8 @@
     void addFanPID(std::unique_ptr<Controller> pid);
     void addThermalPID(std::unique_ptr<Controller> pid);
     double getCachedValue(const std::string& name) override;
+    ValueCacheEntry getCachedValues(const std::string& name) override;
+
     void addFanInput(const std::string& fan);
     void addThermalInput(const std::string& therm);
 
@@ -111,7 +114,8 @@
     std::vector<double> _RPMCeilings;
     std::vector<std::string> _fanInputs;
     std::vector<std::string> _thermalInputs;
-    std::map<std::string, double> _cachedValuesByName;
+    std::map<std::string, ValueCacheEntry> _cachedValuesByName;
+    std::map<std::string, ValueCacheEntry> _cachedFanOutputs;
     const SensorManager& _mgr;
 
     std::vector<std::unique_ptr<Controller>> _fans;