GreenBlue Wireless Doorbell, 38 melodies, 90 dB, black, range up to 200 m, GB237 B

Wireless Battery-Operated Doorbell with 38 Melodies, Black

GREENBLUE GB237 WIRELESS DOORBELL
The GreenBlue GB237 is a practical wireless doorbell that lets you conveniently signal when guests arrive without having to run wires. The set includes a transmitter with a touch button and a battery-powered receiver, so it can be installed and used almost anywhere. The doorbell is ideal for homes, apartments, offices, stores, garages, summer cottages, and yards. Since the receiver doesn’t need to be plugged into an outlet, installation is easy, and you can place it exactly where the signal will be heard best.

38 MELODIES AND ADJUSTABLE VOLUME
The GreenBlue GB237 model offers 38 different ringtones, including both melodies and short, simple notification sounds. Such a wide selection allows you to customize the ringtone to your personal preferences and the nature of the location where it is used. The device can serve as a classic doorbell, a signal for a customer’s visit to an office or store, or an additional notification in rooms where a standard doorbell isn’t always audible.
The receiver features four-level volume control, allowing you to adjust the signal intensity to the size of the room and your individual needs. A quieter setting is ideal for an apartment or bedroom, while a higher volume level is suitable for a larger home, office, workshop, or commercial space.

Specification:
- Manufacturer: GreenBlue
- Model: GB237 B
- Color: black
- Material: plastic
- Transmission range: up to 200 m (in open space)
- Operating frequency: 433 MHz
- Maximum RF power: 10 mW
- Transmitter power supply: 1x 12V 23A battery (included)
- Receiver power supply: 3x 1.5V AA batteries (not included)
- Receiver power consumption: 1 W
- Number of melodies: 38
- Volume control: 4 levels
- Ring volume: > 50 dB/1 m
- Transmitter operating temperature: -20°C to +60°C
- Receiver operating temperature: -10°C to +45°C
- Transmitter dimensions: 76 x 45 x 17 mm
- Receiver dimensions: 114 x 71 x 30 mm
- Transmitter weight: 26 g
- Receiver weight: 70 g
- Transmitter protection rating: IP44
- Receiver protection rating: IP20
- Transmitter indicator: blue LED when the button is pressed
- Transmitter mounting method: double-sided tape (included)
- Receiver mounting method: can be placed on a surface, has a hole for hanging

Set contains:
- GreenBlue GB237 B Wireless Doorbell
- Transmitter
- 12V 23A battery for the transmitter
- Double-sided tape
- User manual
- Manufacturer's packaging

RANGE UP TO 200 METERS AND IP44 TRANSMITTER
The GreenBlue GB237 wireless doorbell offers a range of up to 200 meters in open space. This allows you to place the receiver a considerable distance from the door—for example, in another room, on another floor, in an office, in a workshop, or deep inside the house. The actual range depends on environmental conditions—walls, ceilings, metal structures, and other obstacles may limit the effective transmission range.
The transmitter is equipped with a convenient touch button that does not require firm pressure and is easy to use, even for children and the elderly. The IP44 rating provides protection against the ingress of solid objects larger than 1 mm in diameter and against water splashes from various directions. The transmitter can therefore be used at an outdoor entrance, at a gate, or at a door; however, it should be protected from direct, heavy rain, flooding, and prolonged exposure to moisture. The battery-powered design of the transmitter and receiver eliminates the need to connect the device to an electrical system, ensuring convenient installation and freedom to choose the location of use.

- Wireless operation – the transmitter and receiver communicate wirelessly, so installing the doorbell is quick and doesn’t require running cables
- Battery-powered – both the transmitter and receiver run on batteries. There’s no need to plug the receiver into an outlet, so you can place it anywhere that’s convenient
- As many as 38 sounds to choose from – the device’s memory includes both various melodies and short beeps. You can select the sound that best suits your preferences
- Four volume levels – you can easily adjust the volume to suit the size of the room and the conditions in which the doorbell is used. A lower volume works well in an apartment, while a higher volume is better for a larger house, garage, or office
- Range of up to 200 meters – in open spaces, the signal can travel up to 200 meters. This allows you to place the receiver even a considerable distance from the door
- Convenient touch button – pressing the transmitter requires minimal force, so even children and seniors can use the doorbell with ease
- IP44-rated transmitter – the button is protected against dust and water splashes, so it can be mounted at the entrance, a side gate, or a main gate
- Simple installation and flexible use – the lack of wires allows you to install the doorbell without chiseling into walls or performing additional electrical work. The GreenBlue GB237 is ideal for front doors, side gates, main gates, homes, apartments, offices, stores, or vacation homes
- Color: black