diff --git a/stm-firmware/include/reflow-controller/periph-config/safety-adc-hwcfg.h b/stm-firmware/include/reflow-controller/periph-config/safety-adc-hwcfg.h
index bd9e6c7..26a23c8 100644
--- a/stm-firmware/include/reflow-controller/periph-config/safety-adc-hwcfg.h
+++ b/stm-firmware/include/reflow-controller/periph-config/safety-adc-hwcfg.h
@@ -28,4 +28,11 @@
 #define TEMP_CHANNEL_NUM (16)
 #define INT_REF_CHANNEL_NUM (17)
 
+#define SAFETY_ADC_INT_REF_MV 1210.0f
+
+#define SAFETY_ADC_TEMP_NOM 25.0f
+#define SAFETY_ADC_TEMP_NOM_MV 760.0f
+#define SAFETY_ADC_TEMP_MV_SLOPE 2.5f
+
+
 #endif /* __SAFETY_ADC_HWCFG_H__ */
diff --git a/stm-firmware/safety-adc.c b/stm-firmware/safety-adc.c
index fb91b5f..945fc93 100644
--- a/stm-firmware/safety-adc.c
+++ b/stm-firmware/safety-adc.c
@@ -53,11 +53,12 @@ enum safety_adc_check_result safety_adc_check_results(uint16_t vref_result, uint
 
 
 	if (vref_calculated) {
-		*vref_calculated = (1210.0 * 4095) / (float)vref_result;
+		*vref_calculated = (SAFETY_ADC_INT_REF_MV * 4095.0f) / (float)vref_result;
 	}
 
 	if (temp_calculated) {
-		*temp_calculated = (((float)temp_result / 4095.0f * 2500.0f - 760.0f) / 2.5f) + 25.0f;
+		*temp_calculated = (((float)temp_result / 4095.0f * 2500.0f -
+				     SAFETY_ADC_TEMP_NOM_MV) / SAFETY_ADC_TEMP_MV_SLOPE) + SAFETY_ADC_TEMP_NOM;
 	}
 
 	return res;