10-in-1 UNO Module Kit Buzzer Terminal Block DS18B20 Digital Module For ArduinoNote:This kit does not includes any instructions、 please note about this before order.Package includes:1 x Mega V4 expansion board (small)1 x Arduino compatible 5V relay module1 x Arduino compatible MQ2 smoke gas module1 x Arduino compatible analog temperature module1 x Arduino compatible DS18B20 digital module1 x Arduino compatible LED lamp module1 x Arduino compatible button module1 x Arduino compatible buzzer module1 x Arduinocompatible 2pin terminal block1 x Sliding rheostat module