diff --git a/lib/sensor.js b/lib/sensor.js
index a204306..04f1bf6 100644
--- a/lib/sensor.js
+++ b/lib/sensor.js
@@ -180,6 +180,9 @@ const sensorPropertiesMap = {
     },
     'signal': {
         reading: ["signaldBm", xforms.noop]
+    },
+    'batteryremaining': {
+        reading: ["batteryRemaining", xforms.noop]
     }
 };
 /* eslint-enable no-invalid-this */
diff --git a/lib/tag.js b/lib/tag.js
index 69db1a8..44efcd3 100644
--- a/lib/tag.js
+++ b/lib/tag.js
@@ -212,7 +212,7 @@ WirelessTag.prototype.hasMotionSensor = function() {
 };
 /** Whether the tag has a light sensor. */
 WirelessTag.prototype.hasLightSensor = function() {
-    return (this.tagType === 26);
+    return (this.tagType === 26 || this.tagType === 107);
 };
 /** Whether the tag has a moisture sensor. */
 WirelessTag.prototype.hasMoistureSensor = function() {
@@ -244,9 +244,15 @@ WirelessTag.prototype.hasEventSensor = function() {
 };
 /** Whether the tag has a humidity sensor. */
 WirelessTag.prototype.hasHumiditySensor = function() {
-    if (this.isOutdoorTag()) return false;
-    if ((this.rev & 0x0F) === 0x0D && this.rev >= 0x4D) return false;
-    return this.canHighPrecTemp();
+    return (this.tagType === 13
+               || this.tagType === 21
+               || this.tagType === 26
+               || this.tagType === 52
+               || this.tagType === 72
+               || this.tagType === 102
+               || this.tagType === 106
+               || this.tagType === 107
+        );
 };
 /** Whether the tag has a temperature sensor. */
 WirelessTag.prototype.hasTempSensor = function() {
@@ -296,6 +302,13 @@ WirelessTag.prototype.hasBatterySensor = function() {
 WirelessTag.prototype.hasSignalSensor = function() {
     return this.isPhysicalTag();
 };
+/**
+ * Whether the tag reports the batteryRemaining. (All
+ * non-virtual tags do.)
+ */
+ WirelessTag.prototype.hasBatteryRemainingSensor = function() {
+    return this.isPhysicalTag();
+};
 /** Whether the tag's motion sensor is an accelerometer. */
 WirelessTag.prototype.hasAccelerometer = function() {
     return this.hasMotionSensor() && ((this.rev & 0x0F) === 0x0A);
@@ -331,6 +344,7 @@ WirelessTag.prototype.canHighPrecTemp = function() {
         || this.tagType === 26                        // ambient light
         || this.tagType === 72                        // PIR
         || this.tagType === 42                        // outdoor tag w/ probe
+        || this.tagType === 106                       // precision ext-power sensor
         || this.isKumostat()
     ;
 };
@@ -389,7 +403,7 @@ WirelessTag.prototype.isWeMo = function() {
 WirelessTag.prototype.isWeMoLED = function() {
     return (this.isWeMo() && (this.data.cap > 0));
 };
-/** Whether the tab object represents a Dropcam camera. */
+/** Whether the tag object represents a Dropcam camera. */
 WirelessTag.prototype.isCamera = function() {
     return (this.tagType === 92);
 };