diff --git a/dist/example.js b/dist/example.js
index 935b534..6ef7897 100644
--- a/dist/example.js
+++ b/dist/example.js
@@ -2,7 +2,7 @@
 import { FindUnits, Unit } from "./index.js";
 import { messages } from "./messages/messages.js";
 console.log("searching...");
-const f = new FindUnits("10.0.0.3");
+const f = new FindUnits();
 const units = await f.searchAsync(1000);
 f.close();
 console.log("Discovered units:", units);
@@ -44,6 +44,9 @@ console.log("got response:", JSON.stringify(resp, null, 2));
 console.log("sending Get Schedule request...");
 resp = await unit.send(messages.GetSchedule());
 console.log("got response:", JSON.stringify(resp, null, 2));
+console.log("sending Get Circuit Status request...");
+resp = await unit.send(messages.GetCircuitStatus());
+console.log("got response:", JSON.stringify(resp, null, 2));
 // console.log("sending Set Setpoint request...");
 // resp = await unit.send(messages.SetSetpoint("B1202", 97));
 // console.log("got response:", JSON.stringify(resp, null, 2));
diff --git a/dist/example.js.map b/dist/example.js.map
index e33f0ae..afd304b 100644
--- a/dist/example.js.map
+++ b/dist/example.js.map
@@ -1 +1 @@
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\ No newline at end of file
+{"version":3,"file":"example.js","sourceRoot":"","sources":["../example.ts"],"names":[],"mappings":"AAAA,YAAY,CAAC;AAEb,OAAO,EAAE,SAAS,EAAE,IAAI,EAAE,MAAM,YAAY,CAAC;AAC7C,OAAO,EAAE,QAAQ,EAAE,MAAM,wBAAwB,CAAC;AAElD,OAAO,CAAC,GAAG,CAAC,cAAc,CAAC,CAAC;AAC5B,MAAM,CAAC,GAAG,IAAI,SAAS,EAAE,CAAC;AAC1B,MAAM,KAAK,GAAG,MAAM,CAAC,CAAC,WAAW,CAAC,IAAI,CAAC,CAAC;AACxC,CAAC,CAAC,KAAK,EAAE,CAAC;AACV,OAAO,CAAC,GAAG,CAAC,mBAAmB,EAAE,KAAK,CAAC,CAAC;AAExC,IAAI,KAAK,CAAC,MAAM,KAAK,CAAC,EAAE,CAAC;IACvB,MAAM,IAAI,KAAK,CAAC,wCAAwC,CAAC,CAAC;AAC5D,CAAC;AAED,IAAI,KAAK,CAAC,MAAM,GAAG,CAAC,EAAE,CAAC;IACrB,MAAM,IAAI,KAAK,CACb,oEAAoE,IAAI,CAAC,SAAS,CAAC,KAAK,CAAC,EAAE,CAC5F,CAAC;AACJ,CAAC;AAED,MAAM,QAAQ,GAAG,KAAK,CAAC,CAAC,CAAC,CAAC,UAAU,CAAC;AACrC,MAAM,IAAI,GAAG,KAAK,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;AAE3B,gCAAgC;AAChC,qBAAqB;AAErB,OAAO,CAAC,GAAG,CAAC,uCAAuC,EAAE,QAAQ,EAAE,MAAM,EAAE,IAAI,CAAC,CAAC;AAC7E,MAAM,IAAI,GAAG,IAAI,IAAI,CAAC,QAAQ,EAAE,IAAI,CAAC,CAAC;AACtC,MAAM,IAAI,CAAC,OAAO,EAAE,CAAC;AACrB,OAAO,CAAC,GAAG,CAAC,WAAW,CAAC,CAAC;AAEzB,IAAI,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,EAAE;IACxB,OAAO,CAAC,GAAG,CAAC,kBAAkB,EAAE,GAAG,CAAC,CAAC;AACvC,CAAC,CAAC,CAAC;AAEH,OAAO,CAAC,GAAG,CAAC,4BAA4B,CAAC,CAAC;AAC1C,IAAI,IAAI,GAAG,MAAM,IAAI,CAAC,IAAI,CAAC,QAAQ,CAAC,kBAAkB,CAAC,OAAO,EAAE,OAAO,CAAC,CAAC,CAAC;AAC1E,OAAO,CAAC,GAAG,CAAC,eAAe,EAAE,IAAI,CAAC,SAAS,CAAC,IAAI,EAAE,IAAI,EAAE,CAAC,CAAC,CAAC,CAAC;AAE5D,OAAO,CAAC,GAAG,CAAC,oCAAoC,CAAC,CAAC;AAClD,IAAI,GAAG,MAAM,IAAI,CAAC,IAAI,CAAC,QAAQ,CAAC,oBAAoB,EAAE,CAAC,CAAC;AACxD,OAAO,CAAC,GAAG,CAAC,eAAe,EAAE,IAAI,CAAC,SAAS,CAAC,IAAI,EAAE,IAAI,EAAE,CAAC,CAAC,CAAC,CAAC;AAE5D,OAAO,CAAC,GAAG,CAAC,sCAAsC,CAAC,CAAC;AACpD,IAAI,GAAG,MAAM,IAAI,CAAC,IAAI,CAAC,QAAQ,CAAC,sBAAsB,EAAE,CAAC,CAAC;AAC1D,OAAO,CAAC,GAAG,CAAC,eAAe,EAAE,IAAI,CAAC,SAAS,CAAC,IAAI,EAAE,IAAI,EAAE,CAAC,CAAC,CAAC,CAAC;AAE5D,OAAO,CAAC,GAAG,CAAC,oCAAoC,CAAC,CAAC;AAClD,IAAI,GAAG,MAAM,IAAI,CAAC,IAAI,CAAC,QAAQ,CAAC,aAAa,EAAE,CAAC,CAAC;AACjD,OAAO,CAAC,GAAG,CAAC,eAAe,EAAE,IAAI,CAAC,SAAS,CAAC,IAAI,EAAE,IAAI,EAAE,CAAC,CAAC,CAAC,CAAC;AAE5D,OAAO,CAAC,GAAG,CAAC,wCAAwC,CAAC,CAAC;AACtD,IAAI,GAAG,MAAM,IAAI,CAAC,IAAI,CAAC,QAAQ,CAAC,iBAAiB,EAAE,CAAC,CAAC;AACrD,OAAO,CAAC,GAAG,CAAC,eAAe,EAAE,IAAI,CAAC,SAAS,CAAC,IAAI,EAAE,IAAI,EAAE,CAAC,CAAC,CAAC,CAAC;AAE5D,OAAO,CAAC,GAAG,CAAC,gCAAgC,CAAC,CAAC;AAC9C,IAAI,GAAG,MAAM,IAAI,CAAC,IAAI,CAAC,QAAQ,CAAC,UAAU,EAAE,CAAC,CAAC;AAC9C,OAAO,CAAC,GAAG,CAAC,eAAe,EAAE,IAAI,CAAC,SAAS,CAAC,IAAI,EAAE,IAAI,EAAE,CAAC,CAAC,CAAC,CAAC;AAE5D,OAAO,CAAC,GAAG,CAAC,iCAAiC,CAAC,CAAC;AAC/C,IAAI,GAAG,MAAM,IAAI,CAAC,IAAI,CAAC,QAAQ,CAAC,WAAW,EAAE,CAAC,CAAC;AAC/C,OAAO,CAAC,GAAG,CAAC,eAAe,EAAE,IAAI,CAAC,SAAS,CAAC,IAAI,EAAE,IAAI,EAAE,CAAC,CAAC,CAAC,CAAC;AAE5D,OAAO,CAAC,GAAG,CAAC,uCAAuC,CAAC,CAAC;AACrD,IAAI,GAAG,MAAM,IAAI,CAAC,IAAI,CAAC,QAAQ,CAAC,gBAAgB,EAAE,CAAC,CAAC;AACpD,OAAO,CAAC,GAAG,CAAC,eAAe,EAAE,IAAI,CAAC,SAAS,CAAC,IAAI,EAAE,IAAI,EAAE,CAAC,CAAC,CAAC,CAAC;AAE5D,kDAAkD;AAClD,6DAA6D;AAC7D,+DAA+D;AAE/D,sCAAsC;AACtC,oEAAoE;AACpE,+DAA+D;AAE/D,+CAA+C;AAC/C,oEAAoE;AACpE,+DAA+D;AAE/D,kDAAkD;AAClD,+DAA+D;AAC/D,+DAA+D;AAE/D,IAAI,CAAC,KAAK,EAAE,CAAC"}
\ No newline at end of file
diff --git a/dist/messages/circuit-status.d.ts b/dist/messages/circuit-status.d.ts
new file mode 100644
index 0000000..af474b7
--- /dev/null
+++ b/dist/messages/circuit-status.d.ts
@@ -0,0 +1,9 @@
+import { ICRequest } from "./request.js";
+/**
+ * Requests the list of circuits known to this controller.
+ *
+ * The response contains an `objectList` populated with circuit information.
+ *
+ * @returns the object used to issue this request
+ */
+export declare function GetCircuitStatus(): ICRequest;
diff --git a/dist/messages/circuit-status.js b/dist/messages/circuit-status.js
new file mode 100644
index 0000000..6a5e299
--- /dev/null
+++ b/dist/messages/circuit-status.js
@@ -0,0 +1,37 @@
+import { GetRequest, ICRequestObj } from "./request.js";
+/**
+ * Requests the list of circuits known to this controller.
+ *
+ * The response contains an `objectList` populated with circuit information.
+ *
+ * @returns the object used to issue this request
+ */
+export function GetCircuitStatus() {
+    const req = GetRequest();
+    req.command = "GetParamList";
+    req.condition = "OBJTYP = CIRCUIT";
+    req.objectList = [];
+    const reqObj = new ICRequestObj();
+    reqObj.objnam = "ALL";
+    reqObj.keys = [
+        "OBJNAM",
+        "OBJTYP",
+        "SUBTYP",
+        "STATUS",
+        "BODY",
+        "SNAME",
+        "HNAME",
+        "FREEZE",
+        "DNTSTP",
+        "HNAME",
+        "TIME",
+        "FEATR",
+        "USAGE",
+        "LIMIT",
+        "USE",
+        "SHOMNU",
+    ];
+    req.objectList.push(reqObj);
+    return req;
+}
+//# sourceMappingURL=circuit-status.js.map
\ No newline at end of file
diff --git a/dist/messages/circuit-status.js.map b/dist/messages/circuit-status.js.map
new file mode 100644
index 0000000..17fe0ea
--- /dev/null
+++ b/dist/messages/circuit-status.js.map
@@ -0,0 +1 @@
+{"version":3,"file":"circuit-status.js","sourceRoot":"","sources":["../../messages/circuit-status.ts"],"names":[],"mappings":"AAAA,OAAO,EAAE,UAAU,EAAa,YAAY,EAAE,MAAM,cAAc,CAAC;AAEnE;;;;;;GAMG;AACH,MAAM,UAAU,gBAAgB;IAC9B,MAAM,GAAG,GAAG,UAAU,EAAE,CAAC;IACzB,GAAG,CAAC,OAAO,GAAG,cAAc,CAAC;IAC7B,GAAG,CAAC,SAAS,GAAG,kBAAkB,CAAC;IACnC,GAAG,CAAC,UAAU,GAAG,EAAE,CAAC;IAEpB,MAAM,MAAM,GAAG,IAAI,YAAY,EAAE,CAAC;IAClC,MAAM,CAAC,MAAM,GAAG,KAAK,CAAC;IACtB,MAAM,CAAC,IAAI,GAAG;QACZ,QAAQ;QACR,QAAQ;QACR,QAAQ;QACR,QAAQ;QACR,MAAM;QACN,OAAO;QACP,OAAO;QACP,QAAQ;QACR,QAAQ;QACR,OAAO;QACP,MAAM;QACN,OAAO;QACP,OAAO;QACP,OAAO;QACP,KAAK;QACL,QAAQ;KACT,CAAC;IACF,GAAG,CAAC,UAAU,CAAC,IAAI,CAAC,MAAM,CAAC,CAAC;IAE5B,OAAO,GAAG,CAAC;AACb,CAAC"}
\ No newline at end of file
diff --git a/dist/messages/messages.d.ts b/dist/messages/messages.d.ts
index 367c2c0..35e1881 100644
--- a/dist/messages/messages.d.ts
+++ b/dist/messages/messages.d.ts
@@ -1,5 +1,6 @@
 import { GetBodyStatus } from "./body-status.js";
 import { GetChemicalStatus } from "./chem-status.js";
+import { GetCircuitStatus } from "./circuit-status.js";
 import { GetSystemConfiguration } from "./configuration.js";
 import { GetHeaters } from "./get-heater.js";
 import { SubscribeToUpdates } from "./notify.js";
@@ -11,6 +12,7 @@ import { GetSystemInformation } from "./system-info.js";
 export declare const messages: {
     GetBodyStatus: typeof GetBodyStatus;
     GetChemicalStatus: typeof GetChemicalStatus;
+    GetCircuitStatus: typeof GetCircuitStatus;
     GetHeaters: typeof GetHeaters;
     GetSchedule: typeof GetSchedule;
     GetSystemConfiguration: typeof GetSystemConfiguration;
diff --git a/dist/messages/messages.js b/dist/messages/messages.js
index 3394941..35e24af 100644
--- a/dist/messages/messages.js
+++ b/dist/messages/messages.js
@@ -1,5 +1,6 @@
 import { GetBodyStatus } from "./body-status.js";
 import { GetChemicalStatus } from "./chem-status.js";
+import { GetCircuitStatus } from "./circuit-status.js";
 import { GetSystemConfiguration } from "./configuration.js";
 import { GetHeaters } from "./get-heater.js";
 import { SubscribeToUpdates } from "./notify.js";
@@ -11,6 +12,7 @@ import { GetSystemInformation } from "./system-info.js";
 export const messages = {
     GetBodyStatus,
     GetChemicalStatus,
+    GetCircuitStatus,
     GetHeaters,
     GetSchedule,
     GetSystemConfiguration,
diff --git a/dist/messages/messages.js.map b/dist/messages/messages.js.map
index f082d04..11ea851 100644
--- a/dist/messages/messages.js.map
+++ b/dist/messages/messages.js.map
@@ -1 +1 @@
-{"version":3,"file":"messages.js","sourceRoot":"","sources":["../../messages/messages.ts"],"names":[],"mappings":"AAAA,OAAO,EAAE,aAAa,EAAE,MAAM,kBAAkB,CAAC;AACjD,OAAO,EAAE,iBAAiB,EAAE,MAAM,kBAAkB,CAAC;AACrD,OAAO,EAAE,sBAAsB,EAAE,MAAM,oBAAoB,CAAC;AAC5D,OAAO,EAAE,UAAU,EAAE,MAAM,iBAAiB,CAAC;AAC7C,OAAO,EAAE,kBAAkB,EAAE,MAAM,aAAa,CAAC;AACjD,OAAO,EAAE,WAAW,EAAE,MAAM,eAAe,CAAC;AAC5C,OAAO,EAAE,WAAW,EAAE,MAAM,iBAAiB,CAAC;AAC9C,OAAO,EAAE,eAAe,EAAE,MAAM,wBAAwB,CAAC;AACzD,OAAO,EAAE,WAAW,EAAE,MAAM,eAAe,CAAC;AAC5C,OAAO,EAAE,oBAAoB,EAAE,MAAM,kBAAkB,CAAC;AAExD,MAAM,CAAC,MAAM,QAAQ,GAAG;IACtB,aAAa;IACb,iBAAiB;IACjB,UAAU;IACV,WAAW;IACX,sBAAsB;IACtB,oBAAoB;IACpB,WAAW;IACX,eAAe;IACf,WAAW;IACX,kBAAkB;CACnB,CAAC"}
\ No newline at end of file
+{"version":3,"file":"messages.js","sourceRoot":"","sources":["../../messages/messages.ts"],"names":[],"mappings":"AAAA,OAAO,EAAE,aAAa,EAAE,MAAM,kBAAkB,CAAC;AACjD,OAAO,EAAE,iBAAiB,EAAE,MAAM,kBAAkB,CAAC;AACrD,OAAO,EAAE,gBAAgB,EAAE,MAAM,qBAAqB,CAAC;AACvD,OAAO,EAAE,sBAAsB,EAAE,MAAM,oBAAoB,CAAC;AAC5D,OAAO,EAAE,UAAU,EAAE,MAAM,iBAAiB,CAAC;AAC7C,OAAO,EAAE,kBAAkB,EAAE,MAAM,aAAa,CAAC;AACjD,OAAO,EAAE,WAAW,EAAE,MAAM,eAAe,CAAC;AAC5C,OAAO,EAAE,WAAW,EAAE,MAAM,iBAAiB,CAAC;AAC9C,OAAO,EAAE,eAAe,EAAE,MAAM,wBAAwB,CAAC;AACzD,OAAO,EAAE,WAAW,EAAE,MAAM,eAAe,CAAC;AAC5C,OAAO,EAAE,oBAAoB,EAAE,MAAM,kBAAkB,CAAC;AAExD,MAAM,CAAC,MAAM,QAAQ,GAAG;IACtB,aAAa;IACb,iBAAiB;IACjB,gBAAgB;IAChB,UAAU;IACV,WAAW;IACX,sBAAsB;IACtB,oBAAoB;IACpB,WAAW;IACX,eAAe;IACf,WAAW;IACX,kBAAkB;CACnB,CAAC"}
\ No newline at end of file
diff --git a/example.ts b/example.ts
index 16d3ee3..48fe23f 100644
--- a/example.ts
+++ b/example.ts
@@ -4,7 +4,7 @@ import { FindUnits, Unit } from "./index.js";
 import { messages } from "./messages/messages.js";
 
 console.log("searching...");
-const f = new FindUnits("10.0.0.3");
+const f = new FindUnits();
 const units = await f.searchAsync(1000);
 f.close();
 console.log("Discovered units:", units);
@@ -62,6 +62,10 @@ console.log("sending Get Schedule request...");
 resp = await unit.send(messages.GetSchedule());
 console.log("got response:", JSON.stringify(resp, null, 2));
 
+console.log("sending Get Circuit Status request...");
+resp = await unit.send(messages.GetCircuitStatus());
+console.log("got response:", JSON.stringify(resp, null, 2));
+
 // console.log("sending Set Setpoint request...");
 // resp = await unit.send(messages.SetSetpoint("B1202", 97));
 // console.log("got response:", JSON.stringify(resp, null, 2));
diff --git a/messages/circuit-status.ts b/messages/circuit-status.ts
new file mode 100644
index 0000000..5836b13
--- /dev/null
+++ b/messages/circuit-status.ts
@@ -0,0 +1,39 @@
+import { GetRequest, ICRequest, ICRequestObj } from "./request.js";
+
+/**
+ * Requests the list of circuits known to this controller.
+ *
+ * The response contains an `objectList` populated with circuit information.
+ *
+ * @returns the object used to issue this request
+ */
+export function GetCircuitStatus(): ICRequest {
+  const req = GetRequest();
+  req.command = "GetParamList";
+  req.condition = "OBJTYP = CIRCUIT";
+  req.objectList = [];
+
+  const reqObj = new ICRequestObj();
+  reqObj.objnam = "ALL";
+  reqObj.keys = [
+    "OBJNAM",
+    "OBJTYP",
+    "SUBTYP",
+    "STATUS",
+    "BODY",
+    "SNAME",
+    "HNAME",
+    "FREEZE",
+    "DNTSTP",
+    "HNAME",
+    "TIME",
+    "FEATR",
+    "USAGE",
+    "LIMIT",
+    "USE",
+    "SHOMNU",
+  ];
+  req.objectList.push(reqObj);
+
+  return req;
+}
diff --git a/messages/messages.ts b/messages/messages.ts
index 70c6cfa..f02c2f5 100644
--- a/messages/messages.ts
+++ b/messages/messages.ts
@@ -1,5 +1,6 @@
 import { GetBodyStatus } from "./body-status.js";
 import { GetChemicalStatus } from "./chem-status.js";
+import { GetCircuitStatus } from "./circuit-status.js";
 import { GetSystemConfiguration } from "./configuration.js";
 import { GetHeaters } from "./get-heater.js";
 import { SubscribeToUpdates } from "./notify.js";
@@ -12,6 +13,7 @@ import { GetSystemInformation } from "./system-info.js";
 export const messages = {
   GetBodyStatus,
   GetChemicalStatus,
+  GetCircuitStatus,
   GetHeaters,
   GetSchedule,
   GetSystemConfiguration,