diff --git a/controllers/api_v1_devices_relays.cc b/controllers/api_v1_devices_relays.cc
index 7c5ba80..0adbc70 100644
--- a/controllers/api_v1_devices_relays.cc
+++ b/controllers/api_v1_devices_relays.cc
@@ -1,5 +1,6 @@
 #include <netdb.h>
 #include <models/relay_dbo.h>
+#include <helpers.h>
 #include "api_v1_devices.h"
 
 using namespace api::v1;
@@ -9,8 +10,7 @@ devices::get_relays_all(const HttpRequestPtr &req, std::function<void(const Http
                         const std::string& device_id)
 {
 
-    relay_dbo **all_device_relays = relay_dbo::get_by_simple("device_id", (void *) device_id.c_str(),
-                                                             (intptr_t) sqlite3_bind_text);
+    relay_dbo **all_device_relays = relay_dbo::get_by_simple("device_id", (void *) device_id.c_str(), (intptr_t) sqlite3_bind_text);
     Json::Value all_relays_json(Json::arrayValue);
 
     for(int i = 0; all_device_relays[i] != nullptr; i++)
@@ -30,7 +30,25 @@ devices::get_relays_one_by_id_and_num(const HttpRequestPtr &req,
                                       std::function<void(const HttpResponsePtr &)> &&callback, const std::string& device_id,
                                       int relay_num)
 {
-    relay_dbo **relays = relay_dbo::get_by_simple("id", (void *) (intptr_t) relay_num, (intptr_t) &sqlite3_bind_int);
+    helpers::sql_filter_builder *filters[2];
+    helpers::sql_filter_builder filter
+            {
+                    "number",
+                    (void*)(intptr_t)relay_num,
+                    (intptr_t)&sqlite3_bind_int,
+                    "AND"
+            };
+    helpers::sql_filter_builder filter2
+            {
+                    "device_id",
+                    (void*)device_id.c_str(),
+                    (intptr_t)sqlite3_bind_text,
+                    ";"
+            };
+    filters[0] = &filter;
+    filters[1] = &filter2;
+
+    auto relays = relay_dbo::get_by(filters);
 
     if(relays[0])
     {
diff --git a/models/device_dbo.cc b/models/device_dbo.cc
index 43f8b13..6073691 100644
--- a/models/device_dbo.cc
+++ b/models/device_dbo.cc
@@ -187,6 +187,14 @@ device_dbo::get_by_simple(const char *key, const void *value, intptr_t bind_func
     return device_db_select(stmt);
 }
 
+device_dbo**
+device_dbo::get_by(helpers::sql_filter_builder **filters)
+{
+    sqlite3_stmt *stmt = helpers::create_sql_filtered_query("SELECT * FROM devices WHERE", filters);
+
+    return device_db_select(stmt);
+}
+
 void
 device_dbo::free_list(device_dbo **devices_list)
 {
diff --git a/models/device_dbo.h b/models/device_dbo.h
index 9ed4133..89db361 100644
--- a/models/device_dbo.h
+++ b/models/device_dbo.h
@@ -4,6 +4,7 @@
 #include <string>
 #include <sqlite3.h>
 #include <json/value.h>
+#include <helpers.h>
 
 class device_dbo
 {
@@ -34,6 +35,9 @@ public:
     static device_dbo**
     get_by_simple(const char *key, const void *value, intptr_t bind_func);
 
+    static device_dbo**
+    get_by(helpers::sql_filter_builder **filters);
+
     static device_dbo**
     get_all();
 };
diff --git a/models/relay_dbo.cc b/models/relay_dbo.cc
index b523f7f..e9daacc 100644
--- a/models/relay_dbo.cc
+++ b/models/relay_dbo.cc
@@ -47,7 +47,7 @@ relay_db_select_mapper(sqlite3_stmt *stmt)
                 new_relay->id = sqlite3_column_int(stmt, i);
                 break;
             case 'n':
-                switch(name[0])
+                switch(name[1])
                 {
                     case 'a': // name
                         strncpy(new_relay->name, (const char*)sqlite3_column_text(stmt, i), 127);
@@ -93,9 +93,8 @@ relay_db_select(sqlite3_stmt *stmt)
             }
             else
             {
-                LOG_ERROR << "Error Selecting relays from database";
-                sqlite3_finalize(stmt);
-                return nullptr;
+                LOG_ERROR << "Error Selecting relays from database: " << sqlite3_errstr(s);
+                break;
             }
         }
     }
@@ -145,8 +144,11 @@ Json::Value
 relay_dbo::to_json()
 {
     Json::Value relay_json;
+    // relay_json["id"] = this->id;
     relay_json["name"] = this->name;
-    relay_json["id"] = this->id;
+    relay_json["number"] = this->number;
+    relay_json["active_schedule_id"] = this->active_schedule_id;
+    relay_json["device_id"] = this->device_id;
 
     return relay_json;
 }
@@ -178,6 +180,13 @@ relay_dbo::get_by_simple(const char *key, const void *value, intptr_t bind_func)
     return relay_db_select(stmt);
 }
 
+relay_dbo**
+relay_dbo::get_by(helpers::sql_filter_builder **filters)
+{
+    sqlite3_stmt *stmt = helpers::create_sql_filtered_query("SELECT * FROM relays WHERE", filters);
+    return relay_db_select(stmt);
+}
+
 void
 relay_dbo::free_list(relay_dbo **relays_list)
 {
@@ -187,4 +196,3 @@ relay_dbo::free_list(relay_dbo **relays_list)
     }
     free(relays_list);
 }
-
diff --git a/models/relay_dbo.h b/models/relay_dbo.h
index 1c99b67..b8d1b71 100644
--- a/models/relay_dbo.h
+++ b/models/relay_dbo.h
@@ -4,6 +4,7 @@
 #include <string>
 #include <sqlite3.h>
 #include <json/value.h>
+#include <helpers.h>
 
 class relay_dbo
 {
@@ -33,6 +34,9 @@ public:
     static relay_dbo**
     get_by_simple(const char *key, const void *value, intptr_t bind_func);
 
+    static relay_dbo**
+    get_by(helpers::sql_filter_builder **filters);
+
     static relay_dbo**
     get_all();
 };
diff --git a/models/schedule_dbo.cc b/models/schedule_dbo.cc
index 1917f3f..9309433 100644
--- a/models/schedule_dbo.cc
+++ b/models/schedule_dbo.cc
@@ -177,6 +177,15 @@ schedule_dbo::get_by_simple(const char *key, const void *value, intptr_t bind_fu
         ";"
     };
     filters[0] = &filter;
+
+    sqlite3_stmt *stmt = helpers::create_sql_filtered_query("SELECT * FROM schedules WHERE", filters);
+
+    return schedule_db_select(stmt);
+}
+
+schedule_dbo**
+schedule_dbo::get_by(helpers::sql_filter_builder **filters)
+{
     sqlite3_stmt *stmt = helpers::create_sql_filtered_query("SELECT * FROM schedules WHERE", filters);
 
     return schedule_db_select(stmt);
diff --git a/models/schedule_dbo.h b/models/schedule_dbo.h
index 1a6a886..9b9898c 100644
--- a/models/schedule_dbo.h
+++ b/models/schedule_dbo.h
@@ -4,6 +4,7 @@
 #include <string>
 #include <sqlite3.h>
 #include <json/value.h>
+#include <helpers.h>
 #include "period.h"
 #include "period_list.h"
 
@@ -35,6 +36,9 @@ public:
     static schedule_dbo**
     get_by_simple(const char *key, const void *value, intptr_t bind_func);
 
+    static schedule_dbo**
+    get_by(helpers::sql_filter_builder **filters);
+
     static schedule_dbo**
     get_all();
 };