diff --git a/cryptofeed/connection.py b/cryptofeed/connection.py
index a91df3fde..cb00f2e52 100644
--- a/cryptofeed/connection.py
+++ b/cryptofeed/connection.py
@@ -6,6 +6,7 @@
 '''
 import asyncio
 from contextlib import asynccontextmanager
+import logging
 import time
 from typing import Callable, Union, List
 import uuid
@@ -14,6 +15,9 @@
 import websockets
 
 
+LOG = logging.getLogger('feedhandler')
+
+
 class AsyncConnection:
     def __init__(self, address: Union[str, List[str]], identifier: str, delay: float = 1.0, sleep: float = 0.0, **kwargs):
         """
@@ -58,6 +62,7 @@ async def connect(self):
         if self.conn_type == "ws":
             if self.raw_cb:
                 await self.raw_cb(None, time.time(), self.uuid, connect=self.address)
+            LOG.debug("Connecting (websocket) to %s", self.address)
             self.conn = await websockets.connect(self.address, **self.kwargs)
 
         try:
diff --git a/cryptofeed/exchange/binance.py b/cryptofeed/exchange/binance.py
index ac01c5981..115d0748d 100644
--- a/cryptofeed/exchange/binance.py
+++ b/cryptofeed/exchange/binance.py
@@ -53,13 +53,22 @@ def _address(self) -> Union[str, Dict]:
         address = self.ws_endpoint + '/stream?streams='
 
         for chan in self.channels if not self.subscription else self.subscription:
-            if normalize_channel(self.id, chan) == OPEN_INTEREST:
+            normalized_chan = normalize_channel(self.id, chan)
+
+            if normalize_channel == OPEN_INTEREST:
                 continue
 
             for pair in self.symbols if not self.subscription else self.subscription[chan]:
-                if normalize_channel(self.id, chan) == CANDLES:
+                if normalized_chan == CANDLES:
                     chan = f"{chan}{self.candle_interval}"
-                pair = pair.lower()
+
+                # for everything but premium index the symbols need to be lowercase.
+                if pair.startswith("p"):
+                    if normalized_chan != CANDLES:
+                        raise ValueError("Premium Index Symbols only allowed on Candle data feed")
+                else:
+                    pair = pair.lower()
+
                 stream = f"{pair}@{chan}/"
                 address += stream
                 counter += 1
diff --git a/cryptofeed/exchange/binance_futures.py b/cryptofeed/exchange/binance_futures.py
index 8d2258c63..9f7c0cd6f 100644
--- a/cryptofeed/exchange/binance_futures.py
+++ b/cryptofeed/exchange/binance_futures.py
@@ -104,5 +104,7 @@ async def message_handler(self, msg: str, conn: AsyncConnection, timestamp: floa
             await self._liquidations(msg, timestamp)
         elif msg_type == 'markPriceUpdate':
             await self._funding(msg, timestamp)
+        elif msg['e'] == 'kline':
+            await self._candle(msg, timestamp)
         else:
             LOG.warning("%s: Unexpected message received: %s", self.id, msg)
diff --git a/cryptofeed/exchange/poloniex.py b/cryptofeed/exchange/poloniex.py
index b4fb1b366..8ab20b085 100644
--- a/cryptofeed/exchange/poloniex.py
+++ b/cryptofeed/exchange/poloniex.py
@@ -74,9 +74,17 @@ def __reset(self):
         self.seq_no = {}
 
     async def _ticker(self, msg: dict, timestamp: float):
-        # currencyPair, last, lowestAsk, highestBid, percentChange, baseVolume,
-        # quoteVolume, isFrozen, 24hrHigh, 24hrLow
-        pair_id, _, ask, bid, _, _, _, _, _, _ = msg
+        """
+        Format:
+
+        currencyPair, last, lowestAsk, highestBid, percentChange, baseVolume,
+        quoteVolume, isFrozen, 24hrHigh, 24hrLow, postOnly, maintenance mode
+
+        The postOnly field indicates that new orders posted to the market must be non-matching orders (no taker orders).
+        Any orders that would match will be rejected. Maintenance mode indicates that maintenace is being performed
+        and orders will be rejected
+        """
+        pair_id, _, ask, bid, _, _, _, _, _, _, _, _ = msg
         if pair_id not in self.pair_mapping:
             # Ignore new trading pairs that are added during long running sessions
             return
diff --git a/cryptofeed/standards.py b/cryptofeed/standards.py
index bf06e8f0e..f3aa9ef6b 100755
--- a/cryptofeed/standards.py
+++ b/cryptofeed/standards.py
@@ -256,7 +256,8 @@ def timestamp_normalize(exchange, ts):
         OKEX: ORDER_INFO
     },
     CANDLES: {
-        BINANCE: 'kline_'
+        BINANCE: 'kline_',
+        BINANCE_FUTURES: 'kline_',
     }
 }
 
@@ -335,7 +336,7 @@ def normalize_channel(exchange: str, feed: str) -> str:
         if exchange in entries:
             if entries[exchange] == feed:
                 return chan
-    return None
+    raise ValueError('Unable to normalize channel %s', feed)
 
 
 def is_authenticated_channel(channel: str) -> bool:
diff --git a/cryptofeed/symbols.py b/cryptofeed/symbols.py
index 62aacadcc..b62298d1d 100644
--- a/cryptofeed/symbols.py
+++ b/cryptofeed/symbols.py
@@ -94,7 +94,14 @@ def binance_us_symbols() -> Dict[str, str]:
 
 
 def binance_futures_symbols() -> Dict[str, str]:
-    return _binance_symbols('https://fapi.binance.com/fapi/v1/exchangeInfo', BINANCE_FUTURES)
+    base = _binance_symbols('https://fapi.binance.com/fapi/v1/exchangeInfo', BINANCE_FUTURES)
+    add = {}
+    for symbol, orig in base.items():
+        if "_" in orig:
+            continue
+        add[f"{symbol}-PINDEX"] = f"p{orig}"
+    base.update(add)
+    return base
 
 
 def binance_delivery_symbols() -> Dict[str, str]:
diff --git a/examples/demo.py b/examples/demo.py
index 0608657b6..4b28b20b8 100644
--- a/examples/demo.py
+++ b/examples/demo.py
@@ -8,7 +8,7 @@
 
 from cryptofeed.symbols import binance_symbols
 from cryptofeed import FeedHandler
-from cryptofeed.callback import CandleCallback, BookCallback, FundingCallback, TickerCallback, TradeCallback, FuturesIndexCallback, OpenInterestCallback
+from cryptofeed.callback import BookCallback, FundingCallback, TickerCallback, TradeCallback, FuturesIndexCallback, OpenInterestCallback
 from cryptofeed.defines import CANDLES, BID, ASK, BLOCKCHAIN, COINBASE, FUNDING, GEMINI, L2_BOOK, L3_BOOK, OPEN_INTEREST, TICKER, TRADES, VOLUME, FUTURES_INDEX, BOOK_DELTA
 from cryptofeed.exchanges import (FTX, Binance, BinanceFutures, Bitfinex, Bitflyer, Bitmax, Bitmex, Bitstamp, Bittrex, Coinbase, Gateio,
                                   HitBTC, Huobi, HuobiDM, HuobiSwap, Kraken, OKCoin, OKEx, Poloniex, Bybit)
@@ -104,7 +104,7 @@ def main():
     f.add_feed(Bitmax(symbols=['XRP-USDT', 'BTC-USDT'], channels=[L2_BOOK], callbacks={TRADES: trade, L2_BOOK: book}))
     f.add_feed(Bitflyer(symbols=['BTC-JPY'], channels=[L2_BOOK, TRADES, TICKER], callbacks={L2_BOOK: book, BOOK_DELTA: delta, TICKER: ticker, TRADES: trade}))
     f.add_feed(BinanceFutures(symbols=['BTC-USDT'], channels=[TICKER], callbacks={TICKER: ticker}))
-    f.add_feed(Binance(candle_closed_only=True, symbols=['BTC-USDT'], channels=[CANDLES], callbacks={CANDLES: CandleCallback(candle_callback)}))
+    f.add_feed(BinanceFutures(subscription={TRADES: ['BTC-USDT'], CANDLES: ['BTC-USDT', 'BTC-USDT-PINDEX']}, callbacks={CANDLES: candle_callback, TRADES: trade}))
 
     f.run()