cypress serial master-slave HM-18 Bluetooth 4.2 iBeacon module

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Model Number:
Logic ICs
Brand Name:
Original Brand
Place of Origin:
Guangdong, China (Mainland)
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Selling Units:
Single item
Single package size: 
5X5X5 cm
Single gross weight:
0.5 kg
Package Type:
Standard Box Package
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Lead Time :
Quantity(Piece) 1 - 100 >100
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cypress serial master-slave HM-18 Bluetooth 4.2 iBeacon module



Supply voltageabout 2.5-3.7V
ModuleHM Bluetooth

HM-18 Schematic


HM-18 Size


HM-18 package information

HM-18 Device Terminal Functions



Defferences Between HM-10_11 and HM-18_19

1. MCU
HM-10/11 MCU is 8051 32MHz 8bit
HM-18/19 MCU is Cortex-M0 48MHz 32bit
2. Bluetooth core version
HM-10/11 is BLE 4.0
HM-18/19 is BLE 4.1
3. MTU Size
HM-10/11 MTU size always is 20Bytes
HM-18/19 Default MTU size is 256Bytes
HM-18/19 work with iOS MTU size 158Bytes(if iOS8 and higher), 135Bytes(if <iOS8)
HM-18/19 work with another HM-18/19 MTU size is 256Bytes
HM-18/19 work with HM-10/11 MTU size is 20Bytes
HM-18/19 work with android MTU size is 20Bytes (almost)
4. Speed
HM-10/11 speed is about 2KB/seconds
HM-18/19 speed is about 3-8KB/seconds
5. Power consumption
HM-10/11 in automatic sleep mode 50~400uA
HM-10/11 in active mode 8.5mA
HM-18/19 in automatic sleep mode 50~1200uA
HM-18/19 in active mode 6.5mA
6. Size
HM-10/11 as same as HM-18/19



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