diff --git a/lib/logitech/unifying_receiver/api.py b/lib/logitech/unifying_receiver/api.py
index 8b65b542..eb136be4 100644
--- a/lib/logitech/unifying_receiver/api.py
+++ b/lib/logitech/unifying_receiver/api.py
@@ -297,15 +297,15 @@ def get_device_firmware(handle, device, features_array=None):
 def get_device_type(handle, device, features_array=None):
 	"""Reads a device's type.
 
-	:see DEVICE_TYPES:
+	:see DEVICE_TYPE:
 	:returns: a string describing the device type, or ``None`` if the device is
 	not available or does not support the ``NAME`` feature.
 	"""
 	d_type = request(handle, device, FEATURE.NAME, function=b'\x20', features_array=features_array)
 	if d_type:
 		d_type = ord(d_type[:1])
-		_l.log(_LOG_LEVEL, "(%d,%d) device type %d = %s", handle, device, d_type, DEVICE_TYPES[d_type])
-		return DEVICE_TYPES[d_type]
+		_l.log(_LOG_LEVEL, "(%d,%d) device type %d = %s", handle, device, d_type, DEVICE_TYPE[d_type])
+		return DEVICE_TYPE[d_type]
 
 
 def get_device_name(handle, device, features_array=None):
@@ -339,7 +339,7 @@ def get_device_battery_level(handle, device, features_array=None):
 	if battery:
 		discharge, dischargeNext, status = struct.unpack('!BBB', battery[:3])
 		_l.log(_LOG_LEVEL, "(%d:%d) battery %d%% charged, next level %d%% charge, status %d = %s", discharge, dischargeNext, status, BATTERY_STATUSE[status])
-		return (discharge, dischargeNext, BATTERY_STATUSE[status])
+		return (discharge, dischargeNext, BATTERY_STATUS[status])
 
 
 def get_device_keys(handle, device, features_array=None):
diff --git a/lib/logitech/unifying_receiver/base.py b/lib/logitech/unifying_receiver/base.py
index 6984cc7f..1e1aa30f 100644
--- a/lib/logitech/unifying_receiver/base.py
+++ b/lib/logitech/unifying_receiver/base.py
@@ -186,7 +186,8 @@ def read(handle, timeout=DEFAULT_TIMEOUT):
 			_l.warn("(%d,*) => r[%s] read packet too short: %d bytes", handle, hexlify(data), len(data))
 		if len(data) > _MAX_REPLY_SIZE:
 			_l.warn("(%d,*) => r[%s] read packet too long: %d bytes", handle, hexlify(data), len(data))
-		code, device = struct.unpack('!BB', data[:2])
+		code = ord(data[:1])
+		device = ord(data[1:2])
 		return code, device, data[2:]
 	_l.log(_LOG_LEVEL, "(%d,*) => r[]", handle)
 
@@ -224,7 +225,7 @@ def request(handle, device, feature_index_function, params=b'', features_array=N
 
 		if reply_device != device:
 			# this message not for the device we're interested in
-			_l.log(_LOG_LEVEL, "(%d,%d) request got reply for unexpected device %d: [%s]", handle, device, hexlify(reply_device), hexlify(reply_data))
+			_l.log(_LOG_LEVEL, "(%d,%d) request got reply for unexpected device %d: [%s]", handle, device, reply_device, hexlify(reply_data))
 			# worst case scenario, this is a reply for a concurrent request
 			# on this receiver
 			_unhandled._publish(reply_code, reply_device, reply_data)
@@ -243,7 +244,7 @@ def request(handle, device, feature_index_function, params=b'', features_array=N
 		if reply_code == 0x11 and reply_data[0] == b'\xFF' and reply_data[1:3] == feature_index_function:
 			# an error returned from the device
 			error_code = ord(reply_data[3])
-			_l.warn("(%d,%d) request feature call error %d = %s: %s", handle, device, error_code, ERROR_NAME(error_code), hexlify(reply_data))
+			_l.warn("(%d,%d) request feature call error %d = %s: %s", handle, device, error_code, ERROR_NAME[error_code], hexlify(reply_data))
 			feature_index = ord(feature_index_function[:1])
 			feature_function = feature_index_function[1:2]
 			feature = None if features_array is None else features_array[feature_index]
diff --git a/lib/logitech/unifying_receiver/constants.py b/lib/logitech/unifying_receiver/constants.py
index 5d44dc74..a952f5a8 100644
--- a/lib/logitech/unifying_receiver/constants.py
+++ b/lib/logitech/unifying_receiver/constants.py
@@ -45,10 +45,12 @@ FEATURE_NAME[FEATURE.WIRELESS_STATUS] = 'WIRELESS_STATUS'
 FEATURE_NAME[FEATURE.SOLAR_CHARGE] = 'SOLAR_CHARGE'
 
 
-"""Possible types of devices connected to an UR."""
-DEVICE_TYPES = ('Keyboard', 'Remote Control', 'NUMPAD', 'Mouse',
+_DEVICE_TYPES = ('Keyboard', 'Remote Control', 'NUMPAD', 'Mouse',
 				'Touchpad', 'Trackball', 'Presenter', 'Receiver')
 
+"""Possible types of devices connected to an UR."""
+DEVICE_TYPE = FallbackDict(lambda x: 'unknown', list2dict(_DEVICE_TYPES))
+
 
 _FIRMWARE_TYPES = ('Main (HID)', 'Bootloader', 'Hardware', 'Other')