JS-20 - Security Camera Jablotron - Free user manual and instructions

Product Type	Security Camera
Model	JS-20
Brand	Joblotron
Resolution	1080p Full HD
Field of View	110°
Night Vision	Up to 30 ft (IR LEDs)
Connectivity	Wi-Fi 802.11 b/g/n, Ethernet
Power Supply	DC 12V, 1A (included)
Dimensions	7.5 x 6.2 x 4.8 cm
Weight	320 g
Weather Resistance	IP65 (outdoor use)
Storage	MicroSD up to 128 GB, cloud support
Motion Detection	Yes, with push notifications
Two-Way Audio	Built-in microphone and speaker
Mounting	Wall or ceiling mount included
Maintenance	Clean lens with soft dry cloth; check connections
Safety	Complies with CE, RoHS; use only supplied adapter
Spare Parts	Replacement mounts and power adapters available
Repairability	Self-service via online guides; professional service recommended

Frequently Asked Questions - JS-20 Jablotron

How do I reset the Joblotron JS-20 camera to factory defaults?

Press and hold the reset button on the back for 10 seconds until the status light blinks red. The camera will reboot and be ready for setup.

Can the JS-20 be used outdoors?

Yes, it has an IP65 weatherproof rating, making it suitable for outdoor use in rain or snow.

What is the maximum MicroSD card size supported?

The JS-20 supports MicroSD cards up to 128 GB. Class 10 or higher recommended for smooth recording.

How do I connect the camera to Wi-Fi?

Download the Joblotron app, power on the camera, and follow the in-app instructions to scan the QR code and enter your Wi-Fi password. Only 2.4 GHz networks are supported.

Does the camera support continuous recording?

Yes, you can enable continuous recording to a MicroSD card or cloud storage. Motion-triggered recording is the default to save space.

Why is the night vision not working?

Ensure the IR LEDs are not obstructed and the camera is in a dark environment. Check that night vision mode is enabled in the app settings.

Can I view the camera feed from multiple devices?

Yes, you can share access with family members via the Joblotron app. Each user needs their own account.

How do I clean the camera lens?

Use a soft, lint-free cloth slightly dampened with water. Do not use harsh chemicals or abrasive materials.

What should I do if the camera goes offline?

Check your Wi-Fi connection, power cycle the camera by unplugging it for 10 seconds, and ensure the router is working. If issues persist, try a factory reset.

Is the audio two-way?

Yes, the JS-20 has a built-in microphone and speaker for two-way audio communication through the app.

USER MANUAL JS-20 Jablotron

This P.I.R. motion detector is used to protect interiors. It detects any movement of objects with a temperature close to that of the human body.

The signal from the sensor is electronically analyzed. This ensures that the detector provides excellent sensitivity and at the same time false alarms are basically eliminated. The detection analysis rate can be adjusted to increase its immunity if the JS-20 is installed in a problematic location.

The standard lens in the detector can be replaced with an optional corridor or pet immune lens. Extra terminals (GBS) can be used to facilitate wiring of the detector.

The JS-20 distinguishes itself with excellent RF immunity.

It can be mounted on a flat wall or in a corner.

Installation

This detector is designed for

indoor applications. It can be mounted on a flat wall or in a corner. Do not place the detector close to any heating/cooling vents or near any other object that often change temperature. The detector must have an unobstructed view of the protected area.

1. Open the cover of the detector (press in the plastic tab on the bottom part of the detector's housing with a screwdriver).
2. Remove the PCB by pressing the flexible tab inside the housing.
3. Punch through the pre-formed holes for cables and screws.
4. Attach the housing to the wall (2.5 meters above the floor).
5. Return the PCB into the rear housing and connect the cable wires to the terminals.
6. Attach the cover.

Note: Avoiding touching or scratching the PIR sensor!

Terminals

+12V, GND power supply

PIR, PIR PIR alarm output (normally closed)

TMP, TMP TAMPER output (normally closed)

GBS, GBS auxiliary terminals – useful when wiring (see examples)

Jumpers

LED the LED indicator can be disabled by opening this jumper

DETECTION by opening this jumper you can set a higher rate of analysis and increase the immunity of the detector. This setting is suitable for problematic locations with sudden temperatures changes or electromagnetic interference. Reaction of the detector will be slightly slower in this setting.

Detector testing

• After switching on the power, wait for 1 minute. During this period the detector initializes and stabilizes its parameters (LED will be on if not disabled).
• Each detected movement will be indicated by the detector's LED (if not disabled)
• Confirm that the detector covers the protected area as you expected.

Lenses

Standard lens that is supplied with the JS-20 Largo detector covers an area of 120 degrees / 12 meters.

For special applications other lenses can be used. Optional lenses for long corridors and areas with small animals are supplied separately.

The Pet lens is marked JS-7910. This lens prevents animals smaller than 40 cm to be detected by the detector. The working range of this lens is reduced to 7 meters. It is recommended to test this lens carefully with the animal when installing the system, in order to prevent false alarms.

The Corridor lens is marked JS-7904. The working range of this lens is 25 meters long and only 3 meters wide. It is recommended to test the detector's sensitivity carefully when installing it into a corridor.

The curtain lens is marked JS-7902. By using this lens the PIR detector's working range is restricted to a "curtain". After using this lens, it is for example possible to secure part of a room etc. During the installation it is necessary to test the working range very carefully.

Lens characteristic diagrams can be seen in documents supplied with the lens or on the Jablotron website www.jablotron.com.

Note: Although this product does not contain any harmful materials we suggest you to return the product to the dealer or directly to the producer after usage.

Specification

Power supply: 12 V DC ± 25%

Power consumption (LED off):

Maximum consumption (LED on):

Terminals size:

Mounting height:

Detection range:

Initialization:

Alarm output:

Tamper output:

Environment - class

Operating temperatures

Security level

EMC

	max. 10 mA
	max. 35 mA
	max. 1 mm ^2
	2.5 m above floor
	120° / 12 m (standard lens)
	aprox. 1 minute
	normally closed, max. 60V / 50 mA, internal resistance max.30 Ohm
	normally closed, max. 60 V / 50 mA, internal resistance max.16 Ohm
	II. – general indoor, (EN 50131-1) -10 to +40 °C
grade 2, EN 50131-1, EN 50131-2-2
EN 50130-4, EN 55022

JABLOTRON ALARMS a.s. hereby declares that the JS-20 is in compliance with the essential requirements and other relevant provisions of Directive 2004/108/EC. The original of the conformity assessment can be found on the web site www.jablotron.com, Technical Support section.

Note: Although this product does not contain any harmful materials we suggest you return the product to the dealer or directly to the manufacturer after use.

TAMPER
EOL
R = value of end-of-line resistor

DOUBLE EOL
parallel combination of resistors
R/2 = value of end-of-line resistor

Examples of wiring the JS-20 Largo detector using end-of-line resistors and double end-of-line resistors
(Auxiliary GBS terminals are used to facilitate the wiring)

graph TD
    A["POWER SUPPLY"] --> B["1. DETECTOR POWER SUPPLY"]
    B --> C["2. +12V GND"]
    C --> D["3. +12V GND"]
    D --> E["R"]
    E --> F["The last detector in the loop parallel combination of resistors R/2 = value of end-of-line resistor"]
    style A fill:#f9f,stroke:#333
    style B fill:#ccf,stroke:#333
    style C fill:#cfc,stroke:#333
    style D fill:#fcc,stroke:#333
    style E fill:#ffc,stroke:#333
    style F fill:#cff,stroke:#333

Example of wiring of several JS-20 Largo detectors into the double EOL loop

(Auxiliary GBS terminals are used to facilitate wiring)

graph TD
    A["POWER SUPPLY"] --> B["1. DETECTOR POWER SUPPLY"]
    B --> C["2. +12V GND"]
    C --> D["3. The last detector in the loop"]
    subgraph Power Supply
        E["+12V GND"] --> F["PIR"]
        F --> G["TMP"]
        G --> H["LED"]
        H --> I["GBS"]
        I --> J["DETECTION"]
        J --> K["ALARM LOOP"]
        L["TAMPER LOOP"] --> M["ALARM LOOP"]
    end
    subgraph Detector
        N["+12V GND"] --> O["PIR"]
        O --> P["TMP"]
        P --> Q["LED"]
        Q --> R["GBS"]
        R --> S["DETECTION"]
        T["R"] --> U["+12V GND"]
        V["R"] --> W["TMP"]
        X["R"] --> Y["GBS"]
        Z["R"] --> AA["DETECTION"]
    end
    subgraph End-Loop
        AB["The last detector in the loop R = value of end-of-line resistor"]
    end

Example of wiring of several JS-20 Largo detectors into the EOL loop
(Auxiliary GBS terminals are used to facilitate the wiring)