diff --git a/ophyd_devices/sls_devices/sls_devices.py b/ophyd_devices/sls_devices/sls_devices.py
index 3bbd103..d11f261 100644
--- a/ophyd_devices/sls_devices/sls_devices.py
+++ b/ophyd_devices/sls_devices/sls_devices.py
@@ -1,8 +1,14 @@
-from ophyd import Component as Cpt, DynamicDeviceComponent as Dcpt
-from ophyd import Device, EpicsSignalRO
+import time
+
+from ophyd import Component as Cpt
+from ophyd import Device
+from ophyd import DynamicDeviceComponent as Dcpt
+from ophyd import EpicsSignalRO
 
 
 class SLSOperatorMessages(Device):
+    SUB_VALUE = "value"
+    _default_sub = SUB_VALUE
     messages_info = {
         f"message{i}": (EpicsSignalRO, f"ACOAU-ACCU:OP-MSG{i}", {}) for i in range(1, 6)
     }
@@ -10,8 +16,19 @@ class SLSOperatorMessages(Device):
     date_info = {f"message{i}": (EpicsSignalRO, f"ACOAU-ACCU:OP-DATE{i}", {}) for i in range(1, 6)}
     date = Dcpt(date_info)
 
+    def __init__(self, prefix="", *, name, **kwargs):
+        super().__init__(prefix, name=name, **kwargs)
+        self.messages.message1.subscribe(self._emit_value)
+
+    def _emit_value(self, **kwargs):
+        timestamp = kwargs.pop("timestamp", time.time())
+        self.wait_for_connection()
+        self._run_subs(sub_type=self.SUB_VALUE, timestamp=timestamp, obj=self)
+
 
 class SLSInfo(Device):
+    SUB_VALUE = "value"
+    _default_sub = SUB_VALUE
     # eh_t02_avg_temperature = Cpt(EpicsSignalRO, "ILUUL-02AV:TEMP", auto_monitor=True)
     # eh_t02_temperature_t0204_axis_16 = Cpt(
     #     EpicsSignalRO, "ILUUL-0200-EB104:TEMP", auto_monitor=True
@@ -19,14 +36,26 @@ class SLSInfo(Device):
     # eh_t02_temperature_t0205_axis_18 = Cpt(
     #     EpicsSignalRO, "ILUUL-0200-EB105:TEMP", auto_monitor=True
     # )
-    operation = Cpt(EpicsSignalRO, "ACOAU-ACCU:OP-MODE.VAL", auto_monitor=True)
-    injection_mode = Cpt(EpicsSignalRO, "ALIRF-GUN:INJ-MODE", auto_monitor=True)
+    injection_mode = Cpt(EpicsSignalRO, "ALIRF-GUN:INJ-MODE", auto_monitor=True, string=True)
     current_threshold = Cpt(EpicsSignalRO, "ALIRF-GUN:CUR-LOWLIM", auto_monitor=True)
     current_deadband = Cpt(EpicsSignalRO, "ALIRF-GUN:CUR-DBAND", auto_monitor=True)
-    filling_pattern = Cpt(EpicsSignalRO, "ACORF-FILL:PAT-SELECT", auto_monitor=True)
+    filling_pattern = Cpt(EpicsSignalRO, "ACORF-FILL:PAT-SELECT", auto_monitor=True, string=True)
     filling_life_time = Cpt(EpicsSignalRO, "ARIDI-PCT:TAU-HOUR", auto_monitor=True)
-    orbit_feedback_mode = Cpt(EpicsSignalRO, "ARIDI-BPM:OFB-MODE", auto_monitor=True)
-    fast_orbit_feedback = Cpt(EpicsSignalRO, "ARIDI-BPM:FOFBSTATUS-G", auto_monitor=True)
+    orbit_feedback_mode = Cpt(EpicsSignalRO, "ARIDI-BPM:OFB-MODE", auto_monitor=True, string=True)
+    fast_orbit_feedback = Cpt(
+        EpicsSignalRO, "ARIDI-BPM:FOFBSTATUS-G", auto_monitor=True, string=True
+    )
     ring_current = Cpt(EpicsSignalRO, "ARIDI-PCT:CURRENT", auto_monitor=True)
-    machine_status = Cpt(EpicsSignalRO, "ACOAU-ACCU:OP-MODE", auto_monitor=True)
-    crane_usage = Cpt(EpicsSignalRO, "IBWKR-0101-QH10003:D01_H_D-WA", auto_monitor=True)
+    machine_status = Cpt(EpicsSignalRO, "ACOAU-ACCU:OP-MODE", auto_monitor=True, string=True)
+    crane_usage = Cpt(
+        EpicsSignalRO, "IBWKR-0101-QH10003:D01_H_D-WA", auto_monitor=True, string=True
+    )
+
+    def __init__(self, prefix="", *, name, **kwargs):
+        super().__init__(prefix, name=name, **kwargs)
+        self.ring_current.subscribe(self._emit_value)
+
+    def _emit_value(self, **kwargs):
+        timestamp = kwargs.pop("timestamp", time.time())
+        self.wait_for_connection()
+        self._run_subs(sub_type=self.SUB_VALUE, timestamp=timestamp, obj=self)