diff --git a/hardware/PiSrf/nrsrf b/hardware/PiSrf/nrsrf
index 6c8fcbc1..960fdfbb 100755
--- a/hardware/PiSrf/nrsrf
+++ b/hardware/PiSrf/nrsrf
@@ -4,4 +4,4 @@ python_cmd='python3'
 command -v python3 > /dev/null || python_cmd=`python`
 
 BASEDIR=$(dirname $0)
-sudo $python_cmd -u $BASEDIR/nrsrf.py $@
+exec $python_cmd -u $BASEDIR/nrsrf.py $@
\ No newline at end of file
diff --git a/hardware/PiSrf/nrsrf.py b/hardware/PiSrf/nrsrf.py
index fbe7138c..f9999122 100755
--- a/hardware/PiSrf/nrsrf.py
+++ b/hardware/PiSrf/nrsrf.py
@@ -11,8 +11,11 @@ import os, select
 import signal
 
 def signal_handler(sig, frame):
-    sys.exit(0)
+    #sys.exit(0) #Program won't stop with it
+    os._exit(0)
 signal.signal(signal.SIGINT, signal_handler)
+signal.signal(signal.SIGTERM, signal_handler)
+
 
 # Turn off warnings if you run it a second time...
 GPIO.setwarnings(False)
@@ -52,7 +55,7 @@ def Measure():
 # Main program loop
 if len(sys.argv) > 1:
     pins = sys.argv[1].lower().split(',')
-    if len(pins) != 3:
+    if not 3 <= len(pins) <=4 :
         print("Bad parameters supplied")
         print(pins)
         sys.exit(0)
@@ -60,6 +63,7 @@ if len(sys.argv) > 1:
     TRIGGER = int(pins[0])
     ECHO    = int(pins[1])
     SLEEP   = float(pins[2])
+    precision = int(pins[3]) if len(pins) >= 4 else 0
 
     GPIO.setmode(GPIO.BOARD)        # Use GPIO BOARD numbers
     GPIO.setup(TRIGGER, GPIO.OUT)   # Trigger
@@ -74,15 +78,16 @@ if len(sys.argv) > 1:
 
     while True:
         try:
-            distance = int( Measure() + 0.5 )
+            distance = round( Measure(),precision)
+            distance = int(distance) if precision == 0 else distance
             if distance != OLD and distance > 2 and distance < 400:
                 print(distance)
                 OLD = distance
             time.sleep(SLEEP)
-        except:                     # try to clean up on exit
-            print("0.0")
+        except Exception as e:                     # try to clean up on exit
+            print("0.0")            
 
 else:
     print("Bad params")
-    print("    nrsrf.py trigger_pin, echo_pin, rate_in_seconds")
+    print("    nrsrf.py trigger_pin, echo_pin, rate_in_seconds, [precision_digits]")
     sys.exit(0)
diff --git a/hardware/PiSrf/package.json b/hardware/PiSrf/package.json
index 4a03d4a1..15f615c6 100644
--- a/hardware/PiSrf/package.json
+++ b/hardware/PiSrf/package.json
@@ -1,6 +1,6 @@
 {
     "name"          : "node-red-node-pisrf",
-    "version"       : "0.1.6",
+    "version"       : "0.1.7",
     "description"   : "A Node-RED node for a Raspberry Pi to use a SRF04 or SRF05 range finder",
     "dependencies"  : {
     },
@@ -9,7 +9,7 @@
         "url":"https://github.com/node-red/node-red-nodes/tree/master/hardware/PiSrf"
     },
     "license": "Apache-2.0",
-    "keywords": [ "node-red", "SRF04", "SRF05", "ultrasonic", "range" ],
+    "keywords": [ "node-red", "SRF04", "SRF05", "ultrasonic", "range", "HC-SR04", "SR04" ],
     "node-red"      : {
         "nodes"     : {
             "rpi-srf": "pisrf.js"
diff --git a/hardware/PiSrf/pisrf.html b/hardware/PiSrf/pisrf.html
index 5dfe2f6b..b0a45eca 100644
--- a/hardware/PiSrf/pisrf.html
+++ b/hardware/PiSrf/pisrf.html
@@ -7,6 +7,10 @@
     <div class="form-row">
         <label for="node-input-pulse"><i class="fa fa-clock-o"></i> Repeat (S)</label>
         <input type="text" id="node-input-pulse" placeholder="time between readings">
+    </div>
+	<div class="form-row">
+        <label for="node-input-precision"><i class="fa fa-balance-scale"></i>Decimal Places</label>
+        <input type="text" id="node-input-precision" placeholder="decimal places 0 or 1">
     </div>
     <div class="form-row">
         <label for="node-input-topic"><i class="fa fa-bars"></i> Topic</label>
@@ -24,6 +28,7 @@
     <p>Raspberry Pi input from an SRF04 or SRF05 ultrasonic range finder.</p>
     <p>Outputs a <code>msg.payload</code> with a number representing the range in cm.</p>
     <p>Produces one measurement every 0.5s (default) - but only if the distance is different from the previous reading.</p>
+    <p>You can specify resolution up to one decimal place.</p>
     <p><b>Note:</b> we are using the actual physical pin numbers on connector P1 as they are easier to locate.</p>
 </script>
 
@@ -35,7 +40,8 @@
             name: { value:"" },
             topic: { value:"SRF" },
             pulse: {value:"0.5" },
-            pins: { value:"", required:true, validate:RED.validators.regex(/^\d+,\d+$/) }
+            pins: { value:"", required:true, validate:RED.validators.regex(/^\d+,\d+$/) },
+			precision: {value:"0", validate:RED.validators.regex(/^0|1|^$/)}
         },
         inputs:0,
         outputs:1,
diff --git a/hardware/PiSrf/pisrf.js b/hardware/PiSrf/pisrf.js
index aed2c45c..a996977e 100644
--- a/hardware/PiSrf/pisrf.js
+++ b/hardware/PiSrf/pisrf.js
@@ -33,6 +33,7 @@ module.exports = function(RED) {
         this.topic = n.topic;
         this.pins = n.pins;
         this.pins += ","+(n.pulse || 0.5);
+		this.pins += ","+(n.precision || 0);
         var node = this;
 
         if (allOK === true) {