Product Review

Description

This USA AT&T 4G relay device has 7 independent relay output switches. CH.1 relay switch is activated by phone call and SMS. It will not answer your phone call and reject the calling when it recognise your phone number is pre-programmed on the authorized WHITE LIST, this will make free cost(up to your local provider charge policy). The other CH 2-7 relay switches can be remote controlled by sending SMS only.
All the parameter settings can be done via 3 ways:iOS/Android APP software(highly recommended!), Computer software and send SMS.

Applications:

Heating in holiday homes
Home or office lighting control
Start engine pre-heaters
Garden Irrigation systems
Water well pumps
Resetting of remote servers
Arming and disarming security systems
Access control of gates and garage doors

Specification:

Real-time and interactive control
7ch relay switch output
Rated load:Max 10A at 230VAC
Authorized white list users: Max 200 users
Operating temperature:-25-+60 degree
Relays can operates most of appliances
Low standby power: <20mA 12V
Relay memory after power failure
Security password needed for authorized operation
Password can be modified
System resetting only can be done on computer software
Two operating modes:Momentary(MODE 0) and Latching relays(MODE 1)
Working voltage:12-24V AC/DC, usually 12VDC is good.(Not Included)
Fine grained timer control (programmed by milliseconds)
4G EC25-A module frequency:FDD-LTE: B2/B4/B12, 3G WCDMA:B2/B4/B5, work with USA AT&T SIM card
SIM card size: traditional standard sim card 15x25mm(SIM card is NOT included)

In the Box:

1 x 7CH 4G GSM Relay Switch
1 x USB to micro-USB cable
1 x Internal antenna
1 x External high gain antenna 118 inch
1 x CD-ROM manual