.hide-partial { max-height: none; } .show-more { display: none; }

Mga Module ng Sub-GHz

.catnav-wrapper { height: auto; overflow: visible; } .catalog-nav-tabs ul { white-space: normal; }

Mga Resulta: 537

Mga Ginamit na Filter:

Manufacturer

Series

Frequency

Output Power

Uri ng Interface

Supply Voltage - Min

Supply Voltage - Max

Tina-transmit na Supply Current

Tinatanggap na Supply Current

Minimum na Operating Temperature

Maximum na Operating Temperature

Uri ng Antenna Connector

Mga Dimensiyon

Protocol - Sub GHz

Packaging

I-reset Lahat

Maghanap sa loob ng mga resulta

May Stock

Karaniwang May Stock

Aktibo

Mga Bagong Produkto

Sumusunod sa RoHS

.search-refine-wrapper { display: inline-block; min-width: 100%; } .scroll-body { overflow-x: visible; } .search-table-wrapper { overflow: visible; } .hide-partial { max-height: none; } .show-more { display: none; }

# ng Piyesa

Sub-GHz Modules 2 Button MS Keyfob Transmitter 418MHz

OTX-418-HH-KF2-MS
TE Connectivity / Linx Technologies
1: ₱2,172.68
1,597May Stock

Mfr. # ng Piyesa
OTX-418-HH-KF2-MS

# ng Piyesa ng Mouser
712-OTX-418-HH-KF2MS

TE Connectivity / Linx Technologies

Sub-GHz Modules 2 Button MS Keyfob Transmitter 418MHz

Datasheet

1,597May Stock

₱2,172.68

₱2,005.64

₱1,838.02

₱1,698.82

Tingnan

Min.: 1
Mult.: 1

418 MHz

2.3 V

3.6 V

- 40 C

+ 85 C

56.6 mm x 34.8 mm x 11.4 mm

Bulk

Sub-GHz Modules LoRa Transceiver Module South America

RN2903A-I/RMSA103
Microchip Technology
1: ₱984.84
1,417May Stock

Mfr. # ng Piyesa
RN2903A-I/RMSA103

# ng Piyesa ng Mouser
579-RN2903AIRMSA103

Microchip Technology

Sub-GHz Modules LoRa Transceiver Module South America

Alamin Pa

Datasheet

1,417May Stock

₱984.84

₱983.68

₱923.36

₱922.78

Quote

Min.: 1
Mult.: 1

RN2903

915 MHz

18.5 dBm

UART

3.3 V

122 mA

14.38 mA

- 40 C

+ 85 C

PCB

17.8 mm x 26.7 mm x 3.34 mm

LoRa/LoRaWAN

Tray

Sub-GHz Modules LoRaWAN Module, RM1261, SX1261, MHF4, Cut Tape

453-00140C
Ezurio
1: ₱607.84
176May Stock

Mfr. # ng Piyesa
453-00140C

# ng Piyesa ng Mouser
239-453-00140C

Ezurio

Sub-GHz Modules LoRaWAN Module, RM1261, SX1261, MHF4, Cut Tape

Alamin Pa

Datasheet

176May Stock

₱607.84

Min.: 1
Mult.: 1

RM126x

Cut Tape

Sub-GHz Modules Z-Wave 500 PCB Module, Sub-GHz, -93.0 dBm, 4 dBm

ZM5202AU-CME3R
Silicon Labs
1: ₱852.60
30,705May Stock
NRND

Mfr. # ng Piyesa
ZM5202AU-CME3R

# ng Piyesa ng Mouser
634-ZM5202AU-CME3R

NRND

Silicon Labs

Sub-GHz Modules Z-Wave 500 PCB Module, Sub-GHz, -93.0 dBm, 4 dBm

Alamin Pa

Datasheet

30,705May Stock

Cut Tape

₱852.60

₱760.38

₱723.26

₱680.34

Tingnan

Reel

₱617.70

Min.: 1
Mult.: 1

Reel: 1,000

ZM5202

865.2 MHz to 926.3 MHz

4 dBm

GPIO, PWM, SPI, UART

2.3 V

3.6 V

36 mA

32 mA

- 10 C

+ 85 C

External

13.6 mm x 12.5 mm x 1.9 mm

ISM

Reel, Cut Tape

Sub-GHz Modules 8Btn LngRange Hndhld TX 418MHz Snap Btns

CMD-HHLR-418-MD
TE Connectivity / Linx Technologies
1: ₱2,600.72
508May Stock

Mfr. # ng Piyesa
CMD-HHLR-418-MD

# ng Piyesa ng Mouser
712-CMD-HHLR-418-MD

TE Connectivity / Linx Technologies

Sub-GHz Modules 8Btn LngRange Hndhld TX 418MHz Snap Btns

Datasheet

508May Stock

₱2,600.72

Tingnan

Min.: 1
Mult.: 1

418 MHz

2.1 V

3.6 V

- 40 C

+ 85 C

71.4 mm x 41.1 mm x 15.2 mm

Bulk

Sub-GHz Modules Proprietory, Secure Vault Mid, +14 dBm, Sub-GHz, 512 kB , -40 to 85 C, RF Pin

FGM230SA27HGN3
Silicon Labs
1: ₱414.12
1,115May Stock

Mfr. # ng Piyesa
FGM230SA27HGN3

# ng Piyesa ng Mouser
634-FGM230SA27HGN3

Silicon Labs

Sub-GHz Modules Proprietory, Secure Vault Mid, +14 dBm, Sub-GHz, 512 kB , -40 to 85 C, RF Pin

Alamin Pa

Datasheet

1,115May Stock

₱414.12

₱378.16

₱354.96

₱329.44

Tingnan

Min.: 1
Mult.: 1

FGM230S

868 MHz, 915 MHz

14 dBm

I2C, USART

1.8 V

3.8 V

46.8 mA

7.5 mA

- 40 C

+ 85 C

6.5 mm x 6.5 mm

Sub GHz

Tray

Sub-GHz Modules HumPRO Transceiver 900 MHZ

HUM-900-PRO
TE Connectivity / Linx Technologies
Pinaghihigpitan na Availability

Mfr. # ng Piyesa
HUM-900-PRO

# ng Piyesa ng Mouser
712-HUM-900-PRO

TE Connectivity / Linx Technologies

Sub-GHz Modules HumPRO Transceiver 900 MHZ

Alamin Pa

Datasheet

Pinaghihigpitan na Availability

HumPRO

902 MHz to 928 MHz

9.5 dBm

UART

2 V

3.6 V

40.5 mA

23.5 mA

- 40 C

+ 85 C

11.43 mm x 14 mm x 1.78 mm

Tray

Sub-GHz Modules 5 Button HT Keyfob Transmitter 433MHz

OTX-433-HH-KF5-HT
TE Connectivity / Linx Technologies
1: ₱1,721.44
450May Stock

Mfr. # ng Piyesa
OTX-433-HH-KF5-HT

# ng Piyesa ng Mouser
712-OTX-433-HH-KF5HT

TE Connectivity / Linx Technologies

Sub-GHz Modules 5 Button HT Keyfob Transmitter 433MHz

Alamin Pa

Datasheet

450May Stock

₱1,721.44

₱1,695.34

₱1,668.66

Tingnan

Min.: 1
Mult.: 1

433.92 MHz

2.3 V

3.6 V

0 C

+ 70 C

Bulk

Sub-GHz Modules RF Transmitter 418MHz

TXM-418-LR
TE Connectivity / Linx Technologies
1: ₱660.04
3,629May Stock

Mfr. # ng Piyesa
TXM-418-LR

# ng Piyesa ng Mouser
712-TXM-418-LR

TE Connectivity / Linx Technologies

Sub-GHz Modules RF Transmitter 418MHz

Datasheet

3,629May Stock

₱660.04

₱655.98

₱651.34

₱642.06

Tingnan

Min.: 1
Mult.: 1

418 MHz

4 dBm

2.7 V

3.6 V

- 40 C

+ 70 C

12.7 mm x 9.14 mm x 3.81 mm

Tube

Sub-GHz Modules ConnexLink RS485 Client Only Pkg (TI CC1010)

CL4490-1000-485
Ezurio
1: ₱9,134.42
297May Stock

Mfr. # ng Piyesa
CL4490-1000-485

# ng Piyesa ng Mouser
814-CL4490-485

Ezurio

Sub-GHz Modules ConnexLink RS485 Client Only Pkg (TI CC1010)

Datasheet

297May Stock

₱9,134.42

₱9,009.72

Tingnan

Min.: 1
Mult.: 1

CL4490

902 MHz to 928 MHz

1 W

RS-485

7 V

18 V

400 mA

40 mA

- 40 C

+ 80 C

RP-SMA

112 mm x 69 mm x 36 mm

ISM

Bulk

Sub-GHz Modules LoRa Transceiver Module 915MHz

RN2903A-I/RM103
Microchip Technology
1: ₱1,008.04
14,521May Stock
NRND

Mfr. # ng Piyesa
RN2903A-I/RM103

# ng Piyesa ng Mouser
579-RN2903AI/RM103

NRND

Microchip Technology

Sub-GHz Modules LoRa Transceiver Module 915MHz

Alamin Pa

Datasheet

14,521May Stock

₱1,008.04

₱1,005.14

₱923.36

₱922.78

Min.: 1
Mult.: 1

RN2903

915 MHz

18.5 dBm

UART

3.3 V

122 mA

14.38 mA

- 40 C

+ 85 C

PCB

17.8 mm x 26.7 mm x 3.34 mm

LoRa/LoRaWAN

Tray

Sub-GHz Modules MS 8Button LongRange Handhld Trans 418MH

OTX-418-HH-LR8-MS
TE Connectivity / Linx Technologies
1: ₱3,834.38
595May Stock

Mfr. # ng Piyesa
OTX-418-HH-LR8-MS

# ng Piyesa ng Mouser
712-OTX-418-HH-LR8MS

TE Connectivity / Linx Technologies

Sub-GHz Modules MS 8Button LongRange Handhld Trans 418MH

Datasheet

595May Stock

₱3,834.38

₱3,419.68

Quote

Min.: 1
Mult.: 1

418 MHz

2.1 V

3.6 V

- 40 C

+ 85 C

106.3 mm x 41.1 mm x 15.2 mm

Bulk

Sub-GHz Modules Proprietory, Secure Vault High, +14 dBm, Sub-GHz, 512 kB , -40 to 85 C, RF Pin

FGM230SB27HGN3
Silicon Labs
1: ₱548.68
1,128May Stock

Mfr. # ng Piyesa
FGM230SB27HGN3

# ng Piyesa ng Mouser
634-FGM230SB27HGN3

Silicon Labs

Sub-GHz Modules Proprietory, Secure Vault High, +14 dBm, Sub-GHz, 512 kB , -40 to 85 C, RF Pin

Alamin Pa

Datasheet

1,128May Stock

₱548.68

₱476.76

₱451.24

₱417.02

Tingnan

Min.: 1
Mult.: 1

FGM230S

868 MHz, 915 MHz

14 dBm

I2C, USART

1.8 V

3.8 V

46.8 mA

7.5 mA

- 40 C

+ 85 C

6.5 mm x 6.5 mm

Sub GHz

Tray

Sub-GHz Modules 915 MHz LoRa Module UFL/TRC (1 Pk)

MTXDOT-NA1-A00-1
MultiTech
1: ₱1,582.24
249May Stock

Mfr. # ng Piyesa
MTXDOT-NA1-A00-1

# ng Piyesa ng Mouser
125-MTXDOT-NA1-A00-1

MultiTech

Sub-GHz Modules 915 MHz LoRa Module UFL/TRC (1 Pk)

Alamin Pa

Datasheet

249May Stock

₱1,582.24

₱1,481.90

₱1,347.34

₱1,303.26

Min.: 1
Mult.: 1

MTXDOT-NA1

902 MHz to 928 MHz

19 dBm

I2C, SPI, UART

- 40 C

+ 85 C

Trace, u.FL

23.6 mm x 23.6 mm x 3.51 mm

LoRa/LoRaWAN

Sub-GHz Modules R30 Module - MCU + Sub-GHz 802.15.4 Radio

ATSAMR30M18A-I/RM100
Microchip Technology
1: ₱461.68
238May Stock

Mfr. # ng Piyesa
ATSAMR30M18A-I/RM100

# ng Piyesa ng Mouser
556-AMR30M18AIRM100

Microchip Technology

Sub-GHz Modules R30 Module - MCU + Sub-GHz 802.15.4 Radio

Alamin Pa

Datasheet

238May Stock

₱461.68

₱433.26

₱432.68

Min.: 1
Mult.: 1

ATSAMR30M18A

780 MHz, 868 MHz, 915 MHz

8.7 dBm

Serial

1.8 V

3.6 V

26.97 mA

10.79 mA

- 40 C

+ 85 C

SMA

12.7 mm x 11 mm x 2.71 mm

ISM

Tray

Sub-GHz Modules 8 Btn Compact Hndhld TX 418MHz Snap Btns

CMD-HHCP-418-MD
TE Connectivity / Linx Technologies
1: ₱3,498.56
288May Stock

Mfr. # ng Piyesa
CMD-HHCP-418-MD

# ng Piyesa ng Mouser
712-CMD-HHCP-418-MD

TE Connectivity / Linx Technologies

Sub-GHz Modules 8 Btn Compact Hndhld TX 418MHz Snap Btns

Datasheet

288May Stock

₱3,498.56

₱3,148.82

₱2,973.66

₱2,739.92

Min.: 1
Mult.: 1

418 MHz

2.1 V

3.6 V

- 40 C

+ 85 C

71.4 mm x 41.1 mm x 15.2 mm

Bulk

Sub-GHz Modules Module HUM-PRC 900MHz FHSS FM XCVR FCC

HUM-900-PRC-CAS
TE Connectivity / Linx Technologies
1: ₱1,683.16
408May Stock

Mfr. # ng Piyesa
HUM-900-PRC-CAS

# ng Piyesa ng Mouser
712-HUM-900-PRC-CAS

TE Connectivity / Linx Technologies

Sub-GHz Modules Module HUM-PRC 900MHz FHSS FM XCVR FCC

Alamin Pa

Datasheet

408May Stock

₱1,683.16

Min.: 1
Mult.: 1

HumPRC

902 MHz to 928 MHz

9.5 dBm

UART

2 V

3.6 V

40.5 mA

23.5 mA

- 40 C

+ 85 C

11.43 mm x 20.62 mm x 2.95 mm

Tray

Sub-GHz Modules ConnexLink Starter Pack Server/Client (TI CC1010)

CL4490-1000-485-SP
Ezurio
1: ₱19,088.96
30May Stock
3Inoorder

Mfr. # ng Piyesa
CL4490-1000-485-SP

# ng Piyesa ng Mouser
814-CL4490-485-SP

Ezurio

Sub-GHz Modules ConnexLink Starter Pack Server/Client (TI CC1010)

Datasheet

30May Stock

3Inoorder

₱19,088.96

Tingnan

Min.: 1
Mult.: 1

CL4490

902 MHz to 928 MHz

1 W

RS-485

7 V

18 V

400 mA

40 mA

- 40 C

+ 80 C

RP-SMA

112 mm x 69 mm x 36 mm

ISM

Bulk

Sub-GHz Modules Module HUM-PRC 900MHz FHSS FM XCVR FCC

HUM-900-PRC-UFL
TE Connectivity / Linx Technologies
1: ₱1,683.16
233May Stock

Mfr. # ng Piyesa
HUM-900-PRC-UFL

# ng Piyesa ng Mouser
712-HUM-900-PRC-UFL

TE Connectivity / Linx Technologies

Sub-GHz Modules Module HUM-PRC 900MHz FHSS FM XCVR FCC

Alamin Pa

Datasheet

233May Stock

₱1,683.16

Min.: 1
Mult.: 1

HumPRC

902 MHz to 928 MHz

9.5 dBm

UART

2 V

3.6 V

40.5 mA

23.5 mA

- 40 C

+ 85 C

11.43 mm x 20.62 mm x 2.95 mm

Tray

Sub-GHz Modules 1W PACKAGED AC4790 TRANSCEIVER RS485 (TI CC1010)

CL4790-1000-485
Ezurio
1: ₱8,513.24
50May Stock

Mfr. # ng Piyesa
CL4790-1000-485

# ng Piyesa ng Mouser
814-CL4790-485

Ezurio

Sub-GHz Modules 1W PACKAGED AC4790 TRANSCEIVER RS485 (TI CC1010)

Datasheet

50May Stock

₱8,513.24

₱8,095.06

Tingnan

Min.: 1
Mult.: 1

CL4790

902 MHz to 928 MHz

1 W

RS-485

7 V

18 V

400 mA

40 mA

- 40 C

+ 80 C

RP-SMA

112 mm x 69 mm x 36 mm

ISM

Bulk

Sub-GHz Modules AS923 MHz LoRa Module UFL/TRC w/LBT (1 Pk)

MTXDOT-JP1-A00-1
MultiTech
1: ₱1,862.38
1May Stock

Mfr. # ng Piyesa
MTXDOT-JP1-A00-1

# ng Piyesa ng Mouser
125-MTXDOT-JP1-A00-1

MultiTech

Sub-GHz Modules AS923 MHz LoRa Module UFL/TRC w/LBT (1 Pk)

Alamin Pa

Datasheet

1May Stock

₱1,862.38

₱1,680.26

₱1,499.88

₱1,492.34

Tingnan

Min.: 1
Mult.: 1

MTXDOT-JP1

920 MHz to 923 MHz

19 dBm

I2C, SPI, UART

- 40 C

+ 85 C

u.FL, TRC

23.6 mm x 23.6 mm x 3.51 mm

Sub-GHz Modules LoRa Radio Module - 433MHz

TEL0116
DFRobot
1: ₱2,314.20
1May Stock
4Inoorder

Mfr. # ng Piyesa
TEL0116

# ng Piyesa ng Mouser
426-TEL0116

DFRobot

Sub-GHz Modules LoRa Radio Module - 433MHz

Datasheet

1May Stock

4Inoorder

₱2,314.20

Min.: 1
Mult.: 1

433 MHz

20 dBm

UART

2.1 V

3.6 V

120 mA

15.2 mA

- 40 C

+ 85 C

SMA

34.2 mm x 18.4 mm

LoRa/LoRaWAN Mesh

Sub-GHz Modules MS 8Button Compact Handhld Trans 418MHz

OTX-418-HH-CP8-MS
TE Connectivity / Linx Technologies
1: ₱3,293.82
142May Stock

Mfr. # ng Piyesa
OTX-418-HH-CP8-MS

# ng Piyesa ng Mouser
712-OTX-418-HH-CP8MS

TE Connectivity / Linx Technologies

Sub-GHz Modules MS 8Button Compact Handhld Trans 418MHz

Datasheet

142May Stock

₱3,293.82

₱3,157.52

₱2,973.66

Tingnan

Min.: 1
Mult.: 1

418 MHz

2.1 V

3.6 V

- 40 C

+ 85 C

71.4 mm x 41.1 mm x 15.2 mm

Bulk

Sub-GHz Modules Sub-GHz/Wi-SUN radio transceiver

R9A06G062GNP#AC1
Renesas Electronics
1: ₱722.68
121May Stock

Mfr. # ng Piyesa
R9A06G062GNP#AC1

# ng Piyesa ng Mouser
968-R9A06G062GNP#AC1

Renesas Electronics

Sub-GHz Modules Sub-GHz/Wi-SUN radio transceiver

Alamin Pa

Datasheet

121May Stock

₱722.68

₱628.14

₱595.08

₱550.42

Tingnan

Min.: 1
Mult.: 1

RAA604S00/Wi-SUN

Tray

Sub-GHz Modules Nano Shield: LoRa, 868 MHz (EU)

CS-EASYSWITCH-28
Crowd Supply
1: ₱1,160.00
10May Stock

Mfr. # ng Piyesa
CS-EASYSWITCH-28

# ng Piyesa ng Mouser
392-CS-EASYSWITCH-28

Crowd Supply

Sub-GHz Modules Nano Shield: LoRa, 868 MHz (EU)

10May Stock

₱1,160.00

Min.: 1
Mult.: 1

easySwitchBox

868 MHz

3.3 V

5 V

LoRa/LoRaWAN

Mga Module ng Sub-GHz

Customer Service Office

Kumpanya

Mga Mapagkukunan

Suporta

ADLINK Technology
Advantech
Amphenol
Banner Engineering
CCS
Crowd Supply
DFRobot
Digi International
DLP Design
EnOcean
Eurotech
Ezurio
Fanstel
HARTING
HUBER+SUHNER
Industrial Shields
IoTize
Lantronix
LPRS
M5Stack
Microchip
Mikroe
Monnit
Move-X
MultiTech
Murata
Olimex Ltd.
Omron
Parallax
Phoenix Contact
Powercast
Quectel
Renesas Electronics
RF Solutions
ROHM Semiconductor
Seeed Studio
Semtech
SensiEDGE
Silicon Labs
SparkFun Electronics
TE Connectivity
Telemecanique Sensors
TTM Technologies
Wurth Elektronik
ZF Electronics
ZiLOG

20 I/Os
42 I/Os
58 I/Os
725
19R I/Os
1SJ
38AR I/Os
38R I/Os
54ARA I/Os
57AAR I/Os
57R I/Os
A110LR09C
ABZ
AC4490
AC4790
ATSAMR30M18A
BP35
CL4490
CL4790
DS

125 kHz
134 kHz
1.8 MHz to 54 MHz
13.56 MHz
169 MHz
315 MHz
402 MHz to 470 MHz
410 MHz to 525 MHz
418 MHz
433 MHz
433 MHz to 434.4 MHz
433.05 MHz to 434.79 MHz, 863 MHz to 870 MHz
433.92 MHz
434 MHz
434 MHz, 868 MHz
434 MHz, 868 MHz, 915 MHz
500 MHz
780 MHz, 868 MHz, 915 MHz
804 MHz to 940 MHz
840 MHz to 960 MHz

0 dBm
5 mW
10 mW
100 mW
200 mW
290 mW
500 mW
- 8 dBm
- 3 dBm
- 2 dBm
1 W
1 dBm
3 W
3 dBm
4 dBm
5 dBm
6.4 dBm
7 dBm
8.7 dBm
9.5 dBm

ADC, Audio, Camera, GPIO, I2C, SPI, UART, USB
ADC, CAN, GPIO, I2C, PWM, SDIO, SPI, UART, USB
ADC, GPIO, I2C, SPI, UART
Ethernet
GPIO
GPIO, I2C, I2S, UART, USB
GPIO, PWM, SPI, UART
GPIO, UART
I2C
I2C, I2S, JTAG, LPUART, SPI, SWDIO, USART
I2C, I2S, SPI, UART
I2C, I2S, SPI, USART, USB
I2C, RS-232, USB
I2C, SPI, UART
I2C, SPI, UART, USB
I2C, USART
JST-GH, Micro USB
RS-232
RS-232, RS-485
RS-232, USB

1.7 V
1.8 V
2 V
2.1 V
2.1 VDC
2.2 V
2.3 V
2.4 V
2.5 V
2.6 V
2.7 V
2.8 V
3 V
3.3 V
3.4 V
3.6 V
4 V
4.5 V
5 V
6 V

3 V
3.3 V
3.6 V
3.6 VDC
3.7 V
3.8 V
3.9 V
4 V
4.5 V
5 V
5.5 V
6 V
12 V
13.75 V
15 V
18 V
24 V
25.2 V
30 V
30.5 V

1 mA
8 mA
12.5 mA
17 mA
18 mA
22 mA
23 mA
24 mA
25 mA
26 mA
26.97 mA
30 mA
31 mA
32 mA
34 mA
36 mA
38.9 mA
40 mA
40.5 mA
42 mA

1 mA
3 mA
4.2 mA
4.6 mA
5.1 mA
5.3 mA
6 mA
6.7 mA
7.2 mA
7.5 mA
8 mA
10 mA
10.3 mA
10.79 mA
12 mA
12.1 mA
13.36 mA
14.22 mA
14.38 mA
15 mA

6.5 mm x 6.5 mm
7.08 mm x 5.2 mm x 1.8 mm
9 mm x 12 mm x 2.5 mm
10 mm x 10 mm x 1.22 mm
10 mm x 8 mm x 1.6 mm
11.43 mm x 13.97 mm x 1.78 mm
11.43 mm x 14 mm x 1.78 mm
11.43 mm x 20.57 mm x 3 mm
11.43 mm x 20.62 mm x 2.95 mm
12 mm x 12 mm x 2.5 mm
12 mm x 9 mm x 2.5 mm
12.5 mm x 11.6 mm x 1.76 mm
12.7 mm x 11 mm x 2.71 mm
12.7 mm x 9.14 mm x 3.81 mm
13 mm x 11.6 mm x 5.2 mm
13.6 mm x 12.5 mm x 1.9 mm
15.24 mm x 20.32 mm
16 mm x 16 mm
16 mm x 16 mm x 1.8 mm
16 mm x 18 mm