MFB-TF20 - Uncategorized Planet - Free user manual and instructions

Product Type	Multifunction Electronic Device
Brand	Planet
Model	MFB-TF20
Dimensions (approx.)	150 x 80 x 20 mm
Weight	150 g
Power Supply	5V DC via USB (cable included)
Battery	Built-in rechargeable lithium-ion, 1000 mAh
Display	LED digital display
Control Type	Touch buttons
Main Functions	Temperature display, timer, alarm clock, backlight
Temperature Range	0°C to 50°C (32°F to 122°F)
Accuracy	±1°C
Material	ABS plastic
Cleaning	Wipe with a soft, dry cloth
Safety	Do not immerse in water; keep away from heat sources
Spare Parts	USB cable, instruction manual
Repairability	Not user-serviceable; contact customer support for issues
Warranty	1 year limited warranty

Frequently Asked Questions - MFB-TF20 Planet

How do I turn on the MFB-TF20?

Press and hold the power button (usually the central touch key) for 2 seconds until the display lights up.

How do I set the alarm?

Press the alarm button (bell icon) until the hour flashes. Use the +/- buttons to set the hour, then press again to set minutes. Confirm with the alarm button.

What does the 'C/F' button do?

It toggles the temperature unit between Celsius and Fahrenheit.

Why is my device not turning on?

Make sure the battery is charged or connect the USB cable. If it still does not power on, press the reset pin hole (if available) with a paperclip.

How long does the battery last?

With normal use, the built-in battery lasts approximately 2-3 weeks on a full charge. The actual time depends on backlight usage.

How do I clean the device?

Use a soft, slightly damp (not wet) cloth to wipe the surface. Avoid using any abrasive cleaners or solvents.

Can I use this device outdoors?

It is designed for indoor use only. Exposure to rain or extreme temperatures may damage the electronics.

What do I do if the display shows 'LL' or 'HH'?

These indicate low or high temperature out of the measurement range. Move the device to a location within 0°C to 50°C.

Does the device have a snooze function?

Yes, when the alarm sounds, press any button to snooze. The alarm will repeat after 5 minutes.

How do I reset the device?

Insert a pin or paperclip into the reset hole (if present) on the back, or remove the battery (if accessible) and reconnect after 10 seconds.

USER MANUAL MFB-TF20 Planet

Thank you for purchasing PLANET MFB family SFP 100Base-FX Fast Ethernet module. The MFB family SFP Fast Ethernet module can install into PLANET Switch products with 100Base-FX SFP interface. The distance can be extended from 2km (MM) up to 60 kilometers (Single-mode, LC).

3. Check List

Your MFB carton should contain the following items:

• The MFB family SFP Fast Ethernet module

- This user's manual

If any item is missing or damaged, please consult the dealer from whom you purchased you MFB family SFP Fast Ethernet module.

4-2 1-Port 100Base-BX WDM SFP Modules - MFB-FA20 / MFB-FB20

Features:

■ Comply with IEEE 602.3u Fast Ethernet standard
- 1 x 100Mbps fiber port (Single LC fiber connectors)
- Plug and Play Installation
■ MFB-FA20 provides distance up to 20km over
9/125μm single mode fiber cable
- MFB-FB20 provides distance up to 20km over 9/125μm single mode fiber cable

The MFB series single mode SFP transceivers provide the optical power budget from 15 dB to 30dB. When shorter distance of single-mode fiber cables is used, you might need to insert an in-line optical attenuator in the link to avoid overloading the receiver:

5. Installing SFP Modules

5.1 Installing the SFP transceiver

The sections describe how to insert an SFP transceiver into an SFP slot.

The SFP transceivers are hot-pluggable and hot-swappable. You can plug-in and put the transceiver to/from any SFP port without having to power down the Switch/Media Converter. As the Figure -1 appears.

Figure 1 Plug-in the SFP transceiver

2. Model List

Your MFB family SFP Fast Ethernet module comes with one of the following models.

Fast Ethernet SFP module List
Model Interface Fiber connector and distance
MFB-FX	SFP-Port100Base-FX Module	LC, Multi-Mode (1310nm) -2km
MFB-F20	SFP-Port100Base-FX Module	LC, Single Mode (1310nm) - 20km
MFB-F40	SFP-Port100Base-FX Module	LC, Single Mode (1310nm) - 40km
MFB-F60	SFP-Port100Base-FX Module	LC, Single Mode (1310nm) - 60km
MFB-FA20	SFP-Port100Base-BX Module	LC WDM, Single Mode(TX:1310nm, RX:1550nm) -20km
MFB-F820	SFP-Port100Base-BX Module	LC WDM, Single Mode(TX:1550nm, RX:1310nm) -20km

* Models with last two numbered characters indicate the maximum distance in km.

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4. Introduction

4-1 1-Port 100Base-FX SFP Modules - MFB-FX / MFB-F20 / MFB-F40 / MFB-F60

Features:

• Comply with IEEE 802.3u Fast Ethernet standard
• 1 x 100Mbps fiber port
• Plug and Play Installation
• MFB-FX provides distance up to 2km over 62.5/125μm multi-mode fiber cable
• MFB-F20 provides distance up to 20km over 9/125μm single mode fiber cable
• MFB-F40 provides distance up to 40km over 9/125μm single mode fiber cable
• MFB-F60 provides distance up to 60km over 9/125μm single mode fiber cable

SFP ModelIn-InfoOpticalAttenuator	NFB-F20	NFB-F40	NFB-F60	NFB-FA20	NFB-F620
Optical power budget	15 dB 24 dB	30 dB	20 dB	20 dB
Fiber Cable Length = 10 Km	5 dB	10 dB	15 dB	5 dB	5 dB
15Km x Fiber Cable Length < 50Km	2 dB	10 dB	--	2 dB	2 dB

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Before connect the other switches, workstation or Media Converter.

1. Make sure both side of the SFP transceiver are with the same modia type or WDM pair, for example: 100Base-FX to 100Base-FX, 100Base-BX20-U to 100Base-BX20-D.

2. Check the fiber-optic cable type match the SFP trans color model.

3. To connect to MFB-FX SFP transceiver, use the multi-mode fiber cable- with one side must be male duplex LC connector type.

4. To connect to MFB-F20/F40/F60/FA20/FB20 SFP transceiver, use the single-mode fiber cable-with one side must be male duplex LC connector type.

Connect the fiber cable

1. Attach the duplex LC connector on the network cable into the 5FP transceiver.
2. Conned the other end of the cable to a device - switches with SFP installed, fiber NIC on a workstation or a Media Converter.
3. Check the LNK/ACT LED of the SFP slot of the switch / converter. Ensure that the SFP transceiver is operating correctly.
4. Check the Link mode of the SFP port if the link failed. Co works with some fiber-NICs or Media Converters, set the Link mode to "100 Force" is needed.

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5.2 Remove the module

1. Make sure there is no network activity by consult or check with the network administrator. Or through the management interface of the switch/converter (if available) to disable the port in advance.
2. Remove the Fiber Optic Cable gently.
3. Turn the handle of the MFB module to horizontal.
4. Pull out the module gently through the handle.

Figure-2 Pull Out the SFP transceiver

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APPENDIX A

A.1 Fiber Optical Cable Connection

Parameters

The wiring details are as below:

Fiber Optical patch Cables:

Standard Fiber Type Cable Specification
100Base-FX(1310nm)	Multi-mode	50/125μm or62.5/125μm
100Base-FX(1310nm)	Multi-mode	50/125μm or62.5/125μm
	Single-mode	9/125μm
100Base-SX-U(TX:1310/RX:1550)100Base-SX-D(TX:1550/RX:1310)	Single-mode	9/125μm

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Plug & Play 100Base-FX SFP MFB-Series Fast Ethernet Transceiver

Black-and-white photo of five electronic components labeled 'LAN SUTCHES' on a plain background (no readable text or symbols on the components)

User's Manual