diff --git a/debye_bec/devices/nidaq/nidaq.py b/debye_bec/devices/nidaq/nidaq.py
index 8d6dcd9..1679e77 100644
--- a/debye_bec/devices/nidaq/nidaq.py
+++ b/debye_bec/devices/nidaq/nidaq.py
@@ -326,10 +326,14 @@ class NidaqControl(Device):
     server_status = Cpt(EpicsSignalRO, suffix="NIDAQ-ServerStatus", kind=Kind.config)
     compression_ratio = Cpt(EpicsSignalRO, suffix="NIDAQ-CompressionRatio", kind=Kind.config)
     scan_type = Cpt(EpicsSignal, suffix="NIDAQ-ScanType", kind=Kind.config)
+    scan_type_string = Cpt(EpicsSignal, suffix="NIDAQ-ScanType", kind=Kind.config, string=True)
     sampling_rate = Cpt(EpicsSignal, suffix="NIDAQ-SamplingRateRequested", kind=Kind.config)
+    sampling_rate_string = Cpt(EpicsSignal, suffix="NIDAQ-SamplingRateRequested", kind=Kind.config, string=True)
     scan_duration = Cpt(EpicsSignal, suffix="NIDAQ-SamplingDuration", kind=Kind.config)
     readout_range = Cpt(EpicsSignal, suffix="NIDAQ-ReadoutRange", kind=Kind.config)
+    readout_range_string = Cpt(EpicsSignal, suffix="NIDAQ-ReadoutRange", kind=Kind.config, string=True)
     encoder_factor = Cpt(EpicsSignal, suffix="NIDAQ-EncoderFactor", kind=Kind.config)
+    encoder_factor_string = Cpt(EpicsSignal, suffix="NIDAQ-EncoderFactor", kind=Kind.config, string=True)
     stop_call = Cpt(EpicsSignal, suffix="NIDAQ-Stop", kind=Kind.config)
     power = Cpt(EpicsSignal, suffix="NIDAQ-Power", kind=Kind.config)
     heartbeat = Cpt(EpicsSignal, suffix="NIDAQ-Heartbeat", kind=Kind.config, auto_monitor=True)
diff --git a/debye_bec/devices/reffoilchanger.py b/debye_bec/devices/reffoilchanger.py
index d22c997..b59970d 100644
--- a/debye_bec/devices/reffoilchanger.py
+++ b/debye_bec/devices/reffoilchanger.py
@@ -52,9 +52,15 @@ class Reffoilchanger(PSIDeviceBase):
     status = Cpt(
         EpicsSignal, suffix="ES2-REF:SELN-FilterState-ENUM_RBV", kind="config", doc="Status"
     )
+    status_string = Cpt(
+        EpicsSignal, suffix="ES2-REF:SELN-FilterState-ENUM_RBV", kind="config", doc="Status", string=True
+    )
     op_mode = Cpt(
         EpicsSignalWithRBV, suffix="ES2-REF:SELN-OpMode-ENUM", kind="config", doc="Status"
     )
+    op_mode_string = Cpt(
+        EpicsSignalWithRBV, suffix="ES2-REF:SELN-OpMode-ENUM", kind="config", doc="Status", string=True
+    )
     ref_set = Cpt(EpicsSignal, suffix="ES2-REF:SELN-SET", kind="config", doc="Requested reference")
     ref_rb = Cpt(
         EpicsSignalRO, suffix="ES2-REF:SELN-RB", kind="config", doc="Currently set reference"