diff --git a/lib/onewire/onewire.py b/lib/onewire/onewire.py
index 0b3b35a..92feafb 100644
--- a/lib/onewire/onewire.py
+++ b/lib/onewire/onewire.py
@@ -157,12 +157,13 @@ def _search_rom(self, l_rom, diff):
         return rom, next_diff
 
 class DS18X20(object):
-    def __init__(self, onewire):
+    def __init__(self, onewire, useFloat=True):
         self.ow = onewire
         self.roms = [rom for rom in self.ow.scan() if rom[0] == 0x10 or rom[0] == 0x28]
-        self.fp = True
+        self.fp = useFloat
         try:
-            1/1
+            if useFloat:
+                1/1
         except TypeError:
             self.fp = False # floatingpoint not supported