Details / Specs:

• Function: Emergency / panic button (intrusion alarm trigger)

• Working voltage: up to 250 V (AC or DC depending on model)

• Operating current: ≤ 3000 mA (i.e., up to 3 A) for some versions.

• Reset: Manual or automatic reset, depending on model / configuration.

• Contact modes: NO / NC (Normally Open / Normally Closed) — so it can work in different alarm panel wiring configurations.

• Material: ABS plastic housing.

• Another seller (Ascendo) says: Operating Voltage = 12 V DC, current = 300 mA.

• Dimensions (Ascendo): ~45 × 45 × 37 mm.

• Weight: ~33 g (with reset key) for that version.

• Temperature (from Vakhaus): –40 °C to +125 °C for some versions.

Use-Case / Description:

• This is used when a person wants to manually trigger the alarm (panic / hold-up). Very common in burglar alarm systems, especially for “panic button” zones.

• After pressing, the alarm remains in the triggered state until reset (key-reset in some).

• Since it supports NO and NC contacts, it’s flexible to integrate with different control panels / intrusion alarm systems.

Door / Window Sensor (PGST) – PB-68

This is a different PB-68 (same name, different device) — a wireless door/window magnetic sensor.

Details / Specs:

• Working Voltage: 3 V (uses a CR2450 button battery).

• Static current: ≤ 8 µA (very low, good battery life).

• Transmission Frequency: 315 MHz or 433 MHz (model dependent)

• Encoding Format: 1527 (common RF encoding)

• Emission / Transmission Distance: ~120 m (in open space) for some versions.

• Detection / Movement Distance: The magnet and the transmitter can be separated by 25–35 mm to trigger.

• Low Voltage Warning: At 2.2–2.4 V, the device signals low battery.

• Operating Temperature: –10 °C to +50 °C.

• Material: ABS / Plastic housing for durability.

• Compatible with: Alarm hosts / panels that support 433 MHz and the 1527 format.

Use-Case / Description:

• This PB-68 is used as an entry-point sensor on doors, windows, cabinets, etc., to detect opening.

• When the magnet moves away from the sensor unit (door/window opens), it transmits a signal wirelessly to the alarm panel / host to trigger alarm or event.

• It also supports low-voltage warning, so you know when to change battery.

• Good for wireless alarm systems (especially in homes, small offices) where wiring is tough or not desired.