Product parameters:

• Brand: security
• Model: SS-D20
• Power supply: 5
• Communication method: ultrasonic
• Relay drive: none
• Probe input mode: Wired
• Type: security alarm
• Scope of application: elevator maintenance field
• Stand number: 1
• Alarm mode: alarm
• Configurable number of wireless devices: 1
• Ambient temperature:-40-55
• Humidity ≤: 95
• Weight: 0.2