DB300 - Doorbell Mercury - Free user manual and instructions

Product Type	Wireless Digital Intercom (Chime/Doorbell)
Model	DB300
Brand	Mercury
Indoor Unit Dimensions	154 x 54 x 36 mm
Outdoor Unit Dimensions	158 x 62 x 50.5 mm (including rain shade)
Indoor Unit Weight	165 g (including battery)
Outdoor Unit Weight	220 g (including rain shade & battery)
Indoor Unit Power	18650 Lithium rechargeable battery (DC3.7V), charged via USB
Outdoor Unit Power	18650 Lithium rechargeable battery (DC3.7V) or DC12V 1~2A mains adaptor (optional)
Battery Type	18650 Lithium rechargeable (DC3.7V), 2 pcs supplied
Transmission Range	Up to 500 m (open area)
Frequency	426~440 MHz
IP Rating	IP44 (outdoor unit only)
Ringtones	8 selectable melodies
Volume Levels	High, Medium, Low
Electronic Lock Compatibility	Yes (requires outdoor unit mains powered and connecting wire)
Included in Box	Outdoor unit, indoor unit, rain shade, 2x batteries, USB charging lead, lock wire, fixing kit, user guide
Installation	Wire-free; outdoor unit mounts with rain shade, indoor unit stands or wall-mounts
Maintenance	Clean with a dry cloth; avoid moisture and direct sunlight
Safety	Do not immerse in water; do not use if damaged; do not attempt to repair
Spare Parts Availability	Replacement 18650 batteries; optional 12V power supply (350.006UK)
Warranty	Invalidated if device is disassembled or repaired by unauthorized personnel

Frequently Asked Questions - DB300 Mercury

How do I install the outdoor unit?

First, fasten the rain shade to the wall at 1.4~1.7 m high. Insert a rechargeable battery into the outdoor unit, then slot it into the rain shade and secure with the fixing screw.

How do I recharge the batteries?

Use the included USB charging lead. Connect it to the charging port on the indoor unit (or a USB power source). The unlock LED flashes while charging and turns off when fully charged.

Can I connect the intercom to an electronic door lock?

Yes, only if the outdoor unit is mains powered using the optional 12V adaptor (350.006UK). Use the provided connecting wire and consult a qualified electrician.

What is the wireless range?

The range is up to 500 meters in open areas. Obstacles like walls may reduce the range.

How do I change the ringtone?

Press the chime selection button on the indoor unit repeatedly to scroll through the 8 available melodies.

What type of batteries does it use?

Two 18650 Lithium rechargeable batteries (DC3.7V) are included. They can be recharged via the indoor unit or a suitable USB charger.

Why is the LED flashing on my unit?

A slow flashing LED on the outdoor or indoor unit indicates low battery. Recharge the battery as soon as possible.

Is the outdoor unit weatherproof?

Yes, the outdoor unit has an IP44 rating, meaning it is protected against splashes and rain. However, avoid direct submersion.

Can the indoor unit be used without batteries?

No, the indoor unit requires the rechargeable battery for operation. It can be used while charging but must have a battery installed.

How do I mount the indoor unit?

The indoor unit can be placed on a flat surface or wall-mounted using the keyhole slots and fixing screws from the kit.

USER MANUAL DB300 Mercury

Two white electronic devices with circular buttons and perforated speaker grille (no text or symbols visible)

2.4Ghz Wireless Digital Intercom

Order ref: 350.005UK

User Manual

A stylish and attractive wireless digital intercom that allows you to talk to your visitors before opening the door. No wires are required between the outdoor and indoor units making this system very simple to install. Both units are powered by a rechargeable battery with the indoor unit doubling as a battery charger when connected to a suitable USB power source using the charging lead provided. Its also possible to connect the outdoor unit to an electronic door lock, utilising the door release button on the indoor unit. Ideal for use in domestic and business applications and helpful for the elderly or less mobile.

Features:

• Simple wire free installation and setup
• Up to 500m transmission range
• 8 Ringtones and adjustable ring volume
  • Recharge the batteries using the indoor unit and USB charging lead (supplied)
• Weatherproof outdoor unit can be connected to an electronic lock (not supplied) when connected to mains power
  • Outdoor unit can also be mains powered using additional 12V PSU 350.006UK (not supplied)
  • LED indicators for low battery warning and battery charging status

In the box:

• Outdoor unit (IP44)
- Indoor unit
- Rain shade for outdoor unit
• 2pcs DC3.7V Rechargeable battery

• USB charging lead (1m)
• Electronic lock connecting wire
- Fixing kit
- User guide

Installation:

Outdoor unit

1. Fasten the rain shade on the wall around 1.4\~1.7m above the ground using the screws and plugs provided in the fixing kit.
2. Open the battery cover using a small Philips screwdriver and insert one of the DC3.7V rechargeable batteries ensuring the correct polarity.
3. Replace the cover and screw then slot the unit into the rain shade.
4. Secure the unit from underneath using the fixing screw provided in the fixing kit.
5. Its also possible to power the outdoor unit using an additional DC12V mains power supply (350.006UK not

supplied). If mains installation is required, please use a qualified electrician and ensure the rechargeable battery is removed before installation.

Indoor unit

1. The indoor unit can simply be stood on a suitable flat surface or hung on a wall using the fixing screws provided and keyhole slots in the back of the unit.
2. Please ensure the unit is kept in a dry environment away from direct sunlight and any wireless items that may interfere with the signal such as cordless phones, indoor aerials or WiFi hubs and routers.
3. Open the battery cover using a small Philips screwdriver and insert one of the DC3.7V rechargeable batteries ensuring the correct polarity.
4. Replace the cover and screw to secure the unit.
5. There is also a USB charging port on the top of the indoor unit which can be used to charge up the batteries used in both units.
6. Simply insert the USB charging cable provided into the charging port and connect the cable to a suitable USB power source.
7. During charging the unlock button will flash, then go out once the battery is fully charged.

Electronic door lock

1. Its possible to connect the outdoor unit to an additional electronic door lock (not supplied) using the connecting wire provided.
2. This is only possible if the outdoor unit is connected to mains power using the additional 12V power supply mentioned above.
3. It is recommended to use RVV2 x 1.0mm ^4 cable to connect to the electronic door lock.
4. Once the door lock is connected correctly the unlock button will also be activated on the indoor unit.

NOTE: it is recommended that all wiring connections for both the electronic door lock and 12V DC power supply are undertaken by a qualified electrician.

Operation:

1. When the call button is pressed on the outdoor unit, the indoor unit chime will sound and the LED on the talk button will flash.
2. Press the talk button to speak to your visitor and press again to end the conversation.
3. If an electronic door lock is connected you can also press the unlock button to admit your visitor entry to your property.
4. It is possible to select a different chime on the indoor unit. Simply scroll through the 8 available melodies by pressing the chime selection button repeatedly.

1. To adjust the chime volume press the volume adjustment button repeatedly to select either high, medium or low volume setting accordingly.

System alerts:

1. The LED on the outdoor unit call button flashing slowly indicates the battery level is low and it should be recharged as soon as possible.
2. The LED on the indoor unit unlock button flashing slowly indicates the battery level is low and it should be recharged as soon as possible.

Specification:

Frequency	426~440 MHz
Range	Up to 500m (open area)
IP Rating	IP44 (External unit only)
Power supply: indoor unit	18650 Lithium rechargeable battery (DC3.7V)
Power supply: outdoor unit	18650 Lithium rechargeable battery (DC3.7V) or DC12V 1~2A Mains adaptor (not supplied)
Dimensions: indoor unit	154 x 54 x 36mm
Dimensions: outdoor unit	158 x 62 x 50.5mm
Weight: indoor unit	165g (including battery)
Weight: outdoor unit	220g (including rain shade & battery)

Warning:

• For reasons of electrical safety, this device must never be immersed in water, exposed to damp conditions or excessive force.
• Do not use this device if you find that it is damaged in any way.
• Do not attempt to repair this device or take apart under any circumstances, as this will invalidate your warranty.

This product is classed as Electrical or Electronic equipment and should not be disposed with other household or commercial waste at the end of its useful life. The goods must be disposed of according to your local council guidelines.

Hereby, AVSL Group Ltd. declares that the radio equipment type: 350.005UK complies with Directive 2014/53/EU The full text of the EU declaration of conformity for 350.005UK is available at the following internet address:

http://www.avsl.com/assets/exportdoc/3/5/350005UK%20CE.pdf

Errors and omissions excepted.

Copyright© 2021 AVSL Group Ltd, Unit 2 Bridgewater Park, Taylor Road, Trafford Park, Manchester. M41 7JQ.

AVSL (Europe) Ltd, Unit 3D North Point House, North Point Bus. Park, New Mallow Road, Cork, Ireland.